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Finding the Fourth Proportional to 98,553.20, 147,935.03 and 42,421.10

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Solution

The fourth proportional to 98,553.20, 147,935.03 and 42,421.10 is: 63,676.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,553.20 : 147,935.03 = 42,421.10 : x
  2. Step 2: Convert to fraction form
    98,553.20/147,935.03 = 42,421.10/x
  3. Step 3: Cross multiply
    98,553.20x = 147,935.03 × 42,421.10
  4. Step 4: Simplify right side
    98,553.20x = 6,275,565,749.35
  5. Step 5: Solve for x
    x = 6,275,565,749.35/98,553.20
  6. Step 6: Final answer
    x = 63,676.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.