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Finding the Fourth Proportional to 718,001.08, 990,801.08 and 395,710.16

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Solution

The fourth proportional to 718,001.08, 990,801.08 and 395,710.16 is: 546,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,001.08 : 990,801.08 = 395,710.16 : x
  2. Step 2: Convert to fraction form
    718,001.08/990,801.08 = 395,710.16/x
  3. Step 3: Cross multiply
    718,001.08x = 990,801.08 × 395,710.16
  4. Step 4: Simplify right side
    718,001.08x = 392,070,053,894.97
  5. Step 5: Solve for x
    x = 392,070,053,894.97/718,001.08
  6. Step 6: Final answer
    x = 546,057.75

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1.5x scale

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.