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Finding the Fourth Proportional to 99,245.52, 136,922.76 and 65,272.32

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Solution

The fourth proportional to 99,245.52, 136,922.76 and 65,272.32 is: 90,052.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,245.52 : 136,922.76 = 65,272.32 : x
  2. Step 2: Convert to fraction form
    99,245.52/136,922.76 = 65,272.32/x
  3. Step 3: Cross multiply
    99,245.52x = 136,922.76 × 65,272.32
  4. Step 4: Simplify right side
    99,245.52x = 8,937,266,206.00
  5. Step 5: Solve for x
    x = 8,937,266,206.00/99,245.52
  6. Step 6: Final answer
    x = 90,052.09

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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.