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Finding the Fourth Proportional to 111,387.94, 153,701.15 and 63,644.38

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Solution

The fourth proportional to 111,387.94, 153,701.15 and 63,644.38 is: 87,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,387.94 : 153,701.15 = 63,644.38 : x
  2. Step 2: Convert to fraction form
    111,387.94/153,701.15 = 63,644.38/x
  3. Step 3: Cross multiply
    111,387.94x = 153,701.15 × 63,644.38
  4. Step 4: Simplify right side
    111,387.94x = 9,782,214,397.04
  5. Step 5: Solve for x
    x = 9,782,214,397.04/111,387.94
  6. Step 6: Final answer
    x = 87,821.13

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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.