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Finding the Fourth Proportional to 157,068.69, 216,738.38 and 89,063.92

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Solution

The fourth proportional to 157,068.69, 216,738.38 and 89,063.92 is: 122,898.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,068.69 : 216,738.38 = 89,063.92 : x
  2. Step 2: Convert to fraction form
    157,068.69/216,738.38 = 89,063.92/x
  3. Step 3: Cross multiply
    157,068.69x = 216,738.38 × 89,063.92
  4. Step 4: Simplify right side
    157,068.69x = 19,303,569,737.25
  5. Step 5: Solve for x
    x = 19,303,569,737.25/157,068.69
  6. Step 6: Final answer
    x = 122,898.90

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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.