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Finding the Fourth Proportional to 99,030.64, 148,515.60 and 35,843.20

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Solution

The fourth proportional to 99,030.64, 148,515.60 and 35,843.20 is: 53,753.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,030.64 : 148,515.60 = 35,843.20 : x
  2. Step 2: Convert to fraction form
    99,030.64/148,515.60 = 35,843.20/x
  3. Step 3: Cross multiply
    99,030.64x = 148,515.60 × 35,843.20
  4. Step 4: Simplify right side
    99,030.64x = 5,323,274,353.92
  5. Step 5: Solve for x
    x = 5,323,274,353.92/99,030.64
  6. Step 6: Final answer
    x = 53,753.81

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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.