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Finding the Fourth Proportional to 98,390.84, 135,799.56 and 62,573.96

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Solution

The fourth proportional to 98,390.84, 135,799.56 and 62,573.96 is: 86,364.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,390.84 : 135,799.56 = 62,573.96 : x
  2. Step 2: Convert to fraction form
    98,390.84/135,799.56 = 62,573.96/x
  3. Step 3: Cross multiply
    98,390.84x = 135,799.56 × 62,573.96
  4. Step 4: Simplify right side
    98,390.84x = 8,497,516,235.46
  5. Step 5: Solve for x
    x = 8,497,516,235.46/98,390.84
  6. Step 6: Final answer
    x = 86,364.91

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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.