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Finding the Fourth Proportional to 56,557.80, 84,836.70 and 47,809.80

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Solution

The fourth proportional to 56,557.80, 84,836.70 and 47,809.80 is: 71,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,557.80 : 84,836.70 = 47,809.80 : x
  2. Step 2: Convert to fraction form
    56,557.80/84,836.70 = 47,809.80/x
  3. Step 3: Cross multiply
    56,557.80x = 84,836.70 × 47,809.80
  4. Step 4: Simplify right side
    56,557.80x = 4,056,025,659.66
  5. Step 5: Solve for x
    x = 4,056,025,659.66/56,557.80
  6. Step 6: Final answer
    x = 71,714.70

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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.