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Finding the Fourth Proportional to 48,447.40, 72,671.10 and 43,685.80

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Solution

The fourth proportional to 48,447.40, 72,671.10 and 43,685.80 is: 65,528.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,447.40 : 72,671.10 = 43,685.80 : x
  2. Step 2: Convert to fraction form
    48,447.40/72,671.10 = 43,685.80/x
  3. Step 3: Cross multiply
    48,447.40x = 72,671.10 × 43,685.80
  4. Step 4: Simplify right side
    48,447.40x = 3,174,695,140.38
  5. Step 5: Solve for x
    x = 3,174,695,140.38/48,447.40
  6. Step 6: Final answer
    x = 65,528.70

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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.