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Finding the Fourth Proportional to 108,535.75, 149,779.80 and 63,244.81

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Solution

The fourth proportional to 108,535.75, 149,779.80 and 63,244.81 is: 87,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,535.75 : 149,779.80 = 63,244.81 : x
  2. Step 2: Convert to fraction form
    108,535.75/149,779.80 = 63,244.81/x
  3. Step 3: Cross multiply
    108,535.75x = 149,779.80 × 63,244.81
  4. Step 4: Simplify right side
    108,535.75x = 9,472,793,927.71
  5. Step 5: Solve for x
    x = 9,472,793,927.71/108,535.75
  6. Step 6: Final answer
    x = 87,278.10

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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.