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Finding the Fourth Proportional to 387,559.14, 581,301.11 and 117,689.61

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Solution

The fourth proportional to 387,559.14, 581,301.11 and 117,689.61 is: 176,523.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,559.14 : 581,301.11 = 117,689.61 : x
  2. Step 2: Convert to fraction form
    387,559.14/581,301.11 = 117,689.61/x
  3. Step 3: Cross multiply
    387,559.14x = 581,301.11 × 117,689.61
  4. Step 4: Simplify right side
    387,559.14x = 68,413,100,928.47
  5. Step 5: Solve for x
    x = 68,413,100,928.47/387,559.14
  6. Step 6: Final answer
    x = 176,523.00

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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.