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Finding the Fourth Proportional to 65,772.20, 90,765.42 and 37,482.68

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Solution

The fourth proportional to 65,772.20, 90,765.42 and 37,482.68 is: 51,725.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,772.20 : 90,765.42 = 37,482.68 : x
  2. Step 2: Convert to fraction form
    65,772.20/90,765.42 = 37,482.68/x
  3. Step 3: Cross multiply
    65,772.20x = 90,765.42 × 37,482.68
  4. Step 4: Simplify right side
    65,772.20x = 3,402,131,192.93
  5. Step 5: Solve for x
    x = 3,402,131,192.93/65,772.20
  6. Step 6: Final answer
    x = 51,725.98

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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.