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Finding the Fourth Proportional to 586,128.68, 878,187.56 and 393,642.28

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Solution

The fourth proportional to 586,128.68, 878,187.56 and 393,642.28 is: 589,788.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,128.68 : 878,187.56 = 393,642.28 : x
  2. Step 2: Convert to fraction form
    586,128.68/878,187.56 = 393,642.28/x
  3. Step 3: Cross multiply
    586,128.68x = 878,187.56 × 393,642.28
  4. Step 4: Simplify right side
    586,128.68x = 345,691,753,386.04
  5. Step 5: Solve for x
    x = 345,691,753,386.04/586,128.68
  6. Step 6: Final answer
    x = 589,788.16

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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.