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Finding the Fourth Proportional to 112,792.66, 155,653.87 and 67,472.55

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Solution

The fourth proportional to 112,792.66, 155,653.87 and 67,472.55 is: 93,112.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,792.66 : 155,653.87 = 67,472.55 : x
  2. Step 2: Convert to fraction form
    112,792.66/155,653.87 = 67,472.55/x
  3. Step 3: Cross multiply
    112,792.66x = 155,653.87 × 67,472.55
  4. Step 4: Simplify right side
    112,792.66x = 10,502,363,526.27
  5. Step 5: Solve for x
    x = 10,502,363,526.27/112,792.66
  6. Step 6: Final answer
    x = 93,112.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.