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Finding the Fourth Proportional to 99,472.32, 137,263.68 and 54,760.32

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Solution

The fourth proportional to 99,472.32, 137,263.68 and 54,760.32 is: 75,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,472.32 : 137,263.68 = 54,760.32 : x
  2. Step 2: Convert to fraction form
    99,472.32/137,263.68 = 54,760.32/x
  3. Step 3: Cross multiply
    99,472.32x = 137,263.68 × 54,760.32
  4. Step 4: Simplify right side
    99,472.32x = 7,516,603,041.18
  5. Step 5: Solve for x
    x = 7,516,603,041.18/99,472.32
  6. Step 6: Final answer
    x = 75,564.77

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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.