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Finding the Fourth Proportional to 78,641.60, 108,526.56 and 44,648.96

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Solution

The fourth proportional to 78,641.60, 108,526.56 and 44,648.96 is: 61,616.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,641.60 : 108,526.56 = 44,648.96 : x
  2. Step 2: Convert to fraction form
    78,641.60/108,526.56 = 44,648.96/x
  3. Step 3: Cross multiply
    78,641.60x = 108,526.56 × 44,648.96
  4. Step 4: Simplify right side
    78,641.60x = 4,845,598,036.38
  5. Step 5: Solve for x
    x = 4,845,598,036.38/78,641.60
  6. Step 6: Final answer
    x = 61,616.22

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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.