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Finding the Fourth Proportional to 74,708.60, 112,062.90 and 53,713.40

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Solution

The fourth proportional to 74,708.60, 112,062.90 and 53,713.40 is: 80,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,708.60 : 112,062.90 = 53,713.40 : x
  2. Step 2: Convert to fraction form
    74,708.60/112,062.90 = 53,713.40/x
  3. Step 3: Cross multiply
    74,708.60x = 112,062.90 × 53,713.40
  4. Step 4: Simplify right side
    74,708.60x = 6,019,279,372.86
  5. Step 5: Solve for x
    x = 6,019,279,372.86/74,708.60
  6. Step 6: Final answer
    x = 80,570.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.