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Finding the Fourth Proportional to 98,900.88, 136,488.68 and 56,473.04

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Solution

The fourth proportional to 98,900.88, 136,488.68 and 56,473.04 is: 77,935.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,900.88 : 136,488.68 = 56,473.04 : x
  2. Step 2: Convert to fraction form
    98,900.88/136,488.68 = 56,473.04/x
  3. Step 3: Cross multiply
    98,900.88x = 136,488.68 × 56,473.04
  4. Step 4: Simplify right side
    98,900.88x = 7,707,930,685.19
  5. Step 5: Solve for x
    x = 7,707,930,685.19/98,900.88
  6. Step 6: Final answer
    x = 77,935.92

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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.