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Finding the Fourth Proportional to 99,244.53, 136,979.10 and 61,036.94

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Solution

The fourth proportional to 99,244.53, 136,979.10 and 61,036.94 is: 84,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,244.53 : 136,979.10 = 61,036.94 : x
  2. Step 2: Convert to fraction form
    99,244.53/136,979.10 = 61,036.94/x
  3. Step 3: Cross multiply
    99,244.53x = 136,979.10 × 61,036.94
  4. Step 4: Simplify right side
    99,244.53x = 8,360,784,423.06
  5. Step 5: Solve for x
    x = 8,360,784,423.06/99,244.53
  6. Step 6: Final answer
    x = 84,244.28

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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.