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Finding the Fourth Proportional to 116,327.76, 174,578.48 and 86,411.07

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Solution

The fourth proportional to 116,327.76, 174,578.48 and 86,411.07 is: 129,681.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,327.76 : 174,578.48 = 86,411.07 : x
  2. Step 2: Convert to fraction form
    116,327.76/174,578.48 = 86,411.07/x
  3. Step 3: Cross multiply
    116,327.76x = 174,578.48 × 86,411.07
  4. Step 4: Simplify right side
    116,327.76x = 15,085,513,255.77
  5. Step 5: Solve for x
    x = 15,085,513,255.77/116,327.76
  6. Step 6: Final answer
    x = 129,681.11

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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.