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Finding the Fourth Proportional to 70,695.69, 97,560.70 and 38,864.81

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Solution

The fourth proportional to 70,695.69, 97,560.70 and 38,864.81 is: 53,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,695.69 : 97,560.70 = 38,864.81 : x
  2. Step 2: Convert to fraction form
    70,695.69/97,560.70 = 38,864.81/x
  3. Step 3: Cross multiply
    70,695.69x = 97,560.70 × 38,864.81
  4. Step 4: Simplify right side
    70,695.69x = 3,791,678,434.32
  5. Step 5: Solve for x
    x = 3,791,678,434.32/70,695.69
  6. Step 6: Final answer
    x = 53,633.80

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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.