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Finding the Fourth Proportional to 613,172.40, 919,904.40 and 258,003.60

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Solution

The fourth proportional to 613,172.40, 919,904.40 and 258,003.60 is: 387,066.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,172.40 : 919,904.40 = 258,003.60 : x
  2. Step 2: Convert to fraction form
    613,172.40/919,904.40 = 258,003.60/x
  3. Step 3: Cross multiply
    613,172.40x = 919,904.40 × 258,003.60
  4. Step 4: Simplify right side
    613,172.40x = 237,338,646,855.84
  5. Step 5: Solve for x
    x = 237,338,646,855.84/613,172.40
  6. Step 6: Final answer
    x = 387,066.75

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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.