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Finding the Fourth Proportional to 70,581.96, 97,403.27 and 38,752.91

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Solution

The fourth proportional to 70,581.96, 97,403.27 and 38,752.91 is: 53,479.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,581.96 : 97,403.27 = 38,752.91 : x
  2. Step 2: Convert to fraction form
    70,581.96/97,403.27 = 38,752.91/x
  3. Step 3: Cross multiply
    70,581.96x = 97,403.27 × 38,752.91
  4. Step 4: Simplify right side
    70,581.96x = 3,774,660,156.02
  5. Step 5: Solve for x
    x = 3,774,660,156.02/70,581.96
  6. Step 6: Final answer
    x = 53,479.11

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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.