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Finding the Fourth Proportional to 224,436.80, 336,703.80 and 66,681.20

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Solution

The fourth proportional to 224,436.80, 336,703.80 and 66,681.20 is: 100,036.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,436.80 : 336,703.80 = 66,681.20 : x
  2. Step 2: Convert to fraction form
    224,436.80/336,703.80 = 66,681.20/x
  3. Step 3: Cross multiply
    224,436.80x = 336,703.80 × 66,681.20
  4. Step 4: Simplify right side
    224,436.80x = 22,451,813,428.56
  5. Step 5: Solve for x
    x = 22,451,813,428.56/224,436.80
  6. Step 6: Final answer
    x = 100,036.24

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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.