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Finding the Fourth Proportional to 111,395.52, 153,747.72 and 63,644.40

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Solution

The fourth proportional to 111,395.52, 153,747.72 and 63,644.40 is: 87,841.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,395.52 : 153,747.72 = 63,644.40 : x
  2. Step 2: Convert to fraction form
    111,395.52/153,747.72 = 63,644.40/x
  3. Step 3: Cross multiply
    111,395.52x = 153,747.72 × 63,644.40
  4. Step 4: Simplify right side
    111,395.52x = 9,785,181,390.77
  5. Step 5: Solve for x
    x = 9,785,181,390.77/111,395.52
  6. Step 6: Final answer
    x = 87,841.79

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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.