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Finding the Fourth Proportional to 103,266.80, 154,669.80 and 84,834.80

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Solution

The fourth proportional to 103,266.80, 154,669.80 and 84,834.80 is: 127,062.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,266.80 : 154,669.80 = 84,834.80 : x
  2. Step 2: Convert to fraction form
    103,266.80/154,669.80 = 84,834.80/x
  3. Step 3: Cross multiply
    103,266.80x = 154,669.80 × 84,834.80
  4. Step 4: Simplify right side
    103,266.80x = 13,121,381,549.04
  5. Step 5: Solve for x
    x = 13,121,381,549.04/103,266.80
  6. Step 6: Final answer
    x = 127,062.92

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Why These Related Problems?

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