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Finding the Fourth Proportional to 657,419.90, 907,239.83 and 363,070.15

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Solution

The fourth proportional to 657,419.90, 907,239.83 and 363,070.15 is: 501,037.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,419.90 : 907,239.83 = 363,070.15 : x
  2. Step 2: Convert to fraction form
    657,419.90/907,239.83 = 363,070.15/x
  3. Step 3: Cross multiply
    657,419.90x = 907,239.83 × 363,070.15
  4. Step 4: Simplify right side
    657,419.90x = 329,391,697,080.62
  5. Step 5: Solve for x
    x = 329,391,697,080.62/657,419.90
  6. Step 6: Final answer
    x = 501,037.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.