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Finding the Fourth Proportional to 119,381.52, 164,743.03 and 65,666.53

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Solution

The fourth proportional to 119,381.52, 164,743.03 and 65,666.53 is: 90,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,381.52 : 164,743.03 = 65,666.53 : x
  2. Step 2: Convert to fraction form
    119,381.52/164,743.03 = 65,666.53/x
  3. Step 3: Cross multiply
    119,381.52x = 164,743.03 × 65,666.53
  4. Step 4: Simplify right side
    119,381.52x = 10,818,102,483.12
  5. Step 5: Solve for x
    x = 10,818,102,483.12/119,381.52
  6. Step 6: Final answer
    x = 90,617.90

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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.