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Finding the Fourth Proportional to 387,502.19, 581,264.28 and 107,019.44

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Solution

The fourth proportional to 387,502.19, 581,264.28 and 107,019.44 is: 160,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,502.19 : 581,264.28 = 107,019.44 : x
  2. Step 2: Convert to fraction form
    387,502.19/581,264.28 = 107,019.44/x
  3. Step 3: Cross multiply
    387,502.19x = 581,264.28 × 107,019.44
  4. Step 4: Simplify right side
    387,502.19x = 62,206,574,831.28
  5. Step 5: Solve for x
    x = 62,206,574,831.28/387,502.19
  6. Step 6: Final answer
    x = 160,532.19

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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.