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Finding the Fourth Proportional to 71,303.95, 98,398.83 and 39,472.03

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Solution

The fourth proportional to 71,303.95, 98,398.83 and 39,472.03 is: 54,471.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,303.95 : 98,398.83 = 39,472.03 : x
  2. Step 2: Convert to fraction form
    71,303.95/98,398.83 = 39,472.03/x
  3. Step 3: Cross multiply
    71,303.95x = 98,398.83 × 39,472.03
  4. Step 4: Simplify right side
    71,303.95x = 3,884,001,569.72
  5. Step 5: Solve for x
    x = 3,884,001,569.72/71,303.95
  6. Step 6: Final answer
    x = 54,471.06

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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.