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Finding the Fourth Proportional to 91,332, 137,039.04 and 58,043.43

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Solution

The fourth proportional to 91,332, 137,039.04 and 58,043.43 is: 87,091.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,332 : 137,039.04 = 58,043.43 : x
  2. Step 2: Convert to fraction form
    91,332/137,039.04 = 58,043.43/x
  3. Step 3: Cross multiply
    91,332x = 137,039.04 × 58,043.43
  4. Step 4: Simplify right side
    91,332x = 7,954,215,925.51
  5. Step 5: Solve for x
    x = 7,954,215,925.51/91,332
  6. Step 6: Final answer
    x = 87,091.23

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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.