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Finding the Fourth Proportional to 99,256.80, 148,928.40 and 50,008.80

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Solution

The fourth proportional to 99,256.80, 148,928.40 and 50,008.80 is: 75,034.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,256.80 : 148,928.40 = 50,008.80 : x
  2. Step 2: Convert to fraction form
    99,256.80/148,928.40 = 50,008.80/x
  3. Step 3: Cross multiply
    99,256.80x = 148,928.40 × 50,008.80
  4. Step 4: Simplify right side
    99,256.80x = 7,447,730,569.92
  5. Step 5: Solve for x
    x = 7,447,730,569.92/99,256.80
  6. Step 6: Final answer
    x = 75,034.97

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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.