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Finding the Fourth Proportional to 99,068.91, 136,715.13 and 53,746.87

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Solution

The fourth proportional to 99,068.91, 136,715.13 and 53,746.87 is: 74,170.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,068.91 : 136,715.13 = 53,746.87 : x
  2. Step 2: Convert to fraction form
    99,068.91/136,715.13 = 53,746.87/x
  3. Step 3: Cross multiply
    99,068.91x = 136,715.13 × 53,746.87
  4. Step 4: Simplify right side
    99,068.91x = 7,348,010,319.14
  5. Step 5: Solve for x
    x = 7,348,010,319.14/99,068.91
  6. Step 6: Final answer
    x = 74,170.70

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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.