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Finding the Fourth Proportional to 64,449.74, 96,670.76 and 38,320.76

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Solution

The fourth proportional to 64,449.74, 96,670.76 and 38,320.76 is: 57,478.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,449.74 : 96,670.76 = 38,320.76 : x
  2. Step 2: Convert to fraction form
    64,449.74/96,670.76 = 38,320.76/x
  3. Step 3: Cross multiply
    64,449.74x = 96,670.76 × 38,320.76
  4. Step 4: Simplify right side
    64,449.74x = 3,704,496,318.02
  5. Step 5: Solve for x
    x = 3,704,496,318.02/64,449.74
  6. Step 6: Final answer
    x = 57,478.84

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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.