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Finding the Fourth Proportional to 99,532.38, 137,354.68 and 54,820.38

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Solution

The fourth proportional to 99,532.38, 137,354.68 and 54,820.38 is: 75,652.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,532.38 : 137,354.68 = 54,820.38 : x
  2. Step 2: Convert to fraction form
    99,532.38/137,354.68 = 54,820.38/x
  3. Step 3: Cross multiply
    99,532.38x = 137,354.68 × 54,820.38
  4. Step 4: Simplify right side
    99,532.38x = 7,529,835,752.38
  5. Step 5: Solve for x
    x = 7,529,835,752.38/99,532.38
  6. Step 6: Final answer
    x = 75,652.12

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1.5x scale

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.