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Finding the Fourth Proportional to 613,289,991.60, 919,934,987.40 and 552,067,988.40

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Solution

The fourth proportional to 613,289,991.60, 919,934,987.40 and 552,067,988.40 is: 828,101,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,289,991.60 : 919,934,987.40 = 552,067,988.40 : x
  2. Step 2: Convert to fraction form
    613,289,991.60/919,934,987.40 = 552,067,988.40/x
  3. Step 3: Cross multiply
    613,289,991.60x = 919,934,987.40 × 552,067,988.40
  4. Step 4: Simplify right side
    613,289,991.60x = 507,866,657,952,697,280
  5. Step 5: Solve for x
    x = 507,866,657,952,697,280/613,289,991.60
  6. Step 6: Final answer
    x = 828,101,982.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.