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Finding the Fourth Proportional to 613,281,797.20, 919,922,695.80 and 368,393,784.40

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Solution

The fourth proportional to 613,281,797.20, 919,922,695.80 and 368,393,784.40 is: 552,590,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,281,797.20 : 919,922,695.80 = 368,393,784.40 : x
  2. Step 2: Convert to fraction form
    613,281,797.20/919,922,695.80 = 368,393,784.40/x
  3. Step 3: Cross multiply
    613,281,797.20x = 919,922,695.80 × 368,393,784.40
  4. Step 4: Simplify right side
    613,281,797.20x = 338,893,803,261,211,968
  5. Step 5: Solve for x
    x = 338,893,803,261,211,968/613,281,797.20
  6. Step 6: Final answer
    x = 552,590,676.60

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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.