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Finding the Fourth Proportional to 57,117.96, 78,815.70 and 33,248.88

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Solution

The fourth proportional to 57,117.96, 78,815.70 and 33,248.88 is: 45,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,117.96 : 78,815.70 = 33,248.88 : x
  2. Step 2: Convert to fraction form
    57,117.96/78,815.70 = 33,248.88/x
  3. Step 3: Cross multiply
    57,117.96x = 78,815.70 × 33,248.88
  4. Step 4: Simplify right side
    57,117.96x = 2,620,533,751.42
  5. Step 5: Solve for x
    x = 2,620,533,751.42/57,117.96
  6. Step 6: Final answer
    x = 45,879.33

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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.