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Finding the Fourth Proportional to 111,382.43, 153,693.59 and 63,638.87

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Solution

The fourth proportional to 111,382.43, 153,693.59 and 63,638.87 is: 87,813.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,382.43 : 153,693.59 = 63,638.87 : x
  2. Step 2: Convert to fraction form
    111,382.43/153,693.59 = 63,638.87/x
  3. Step 3: Cross multiply
    111,382.43x = 153,693.59 × 63,638.87
  4. Step 4: Simplify right side
    111,382.43x = 9,780,885,307.18
  5. Step 5: Solve for x
    x = 9,780,885,307.18/111,382.43
  6. Step 6: Final answer
    x = 87,813.54

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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.