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Finding the Fourth Proportional to 70,047.81, 96,666.53 and 38,216.97

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Solution

The fourth proportional to 70,047.81, 96,666.53 and 38,216.97 is: 52,739.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,047.81 : 96,666.53 = 38,216.97 : x
  2. Step 2: Convert to fraction form
    70,047.81/96,666.53 = 38,216.97/x
  3. Step 3: Cross multiply
    70,047.81x = 96,666.53 × 38,216.97
  4. Step 4: Simplify right side
    70,047.81x = 3,694,301,685.93
  5. Step 5: Solve for x
    x = 3,694,301,685.93/70,047.81
  6. Step 6: Final answer
    x = 52,739.72

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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.