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Finding the Fourth Proportional to 40,417.80, 60,605.10 and 14,123.40

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Solution

The fourth proportional to 40,417.80, 60,605.10 and 14,123.40 is: 21,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,417.80 : 60,605.10 = 14,123.40 : x
  2. Step 2: Convert to fraction form
    40,417.80/60,605.10 = 14,123.40/x
  3. Step 3: Cross multiply
    40,417.80x = 60,605.10 × 14,123.40
  4. Step 4: Simplify right side
    40,417.80x = 855,950,069.34
  5. Step 5: Solve for x
    x = 855,950,069.34/40,417.80
  6. Step 6: Final answer
    x = 21,177.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.