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Finding the Fourth Proportional to 98,491.68, 135,925.56 and 56,063.88

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Solution

The fourth proportional to 98,491.68, 135,925.56 and 56,063.88 is: 77,372.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,491.68 : 135,925.56 = 56,063.88 : x
  2. Step 2: Convert to fraction form
    98,491.68/135,925.56 = 56,063.88/x
  3. Step 3: Cross multiply
    98,491.68x = 135,925.56 × 56,063.88
  4. Step 4: Simplify right side
    98,491.68x = 7,620,514,284.77
  5. Step 5: Solve for x
    x = 7,620,514,284.77/98,491.68
  6. Step 6: Final answer
    x = 77,372.16

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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.