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Finding the Fourth Proportional to 267,705.56, 369,382.55 and 153,020.57

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Solution

The fourth proportional to 267,705.56, 369,382.55 and 153,020.57 is: 211,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,705.56 : 369,382.55 = 153,020.57 : x
  2. Step 2: Convert to fraction form
    267,705.56/369,382.55 = 153,020.57/x
  3. Step 3: Cross multiply
    267,705.56x = 369,382.55 × 153,020.57
  4. Step 4: Simplify right side
    267,705.56x = 56,523,130,404.53
  5. Step 5: Solve for x
    x = 56,523,130,404.53/267,705.56
  6. Step 6: Final answer
    x = 211,139.17

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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.