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Finding the Fourth Proportional to 103,695.70, 155,428.35 and 44,521.30

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Solution

The fourth proportional to 103,695.70, 155,428.35 and 44,521.30 is: 66,732.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,695.70 : 155,428.35 = 44,521.30 : x
  2. Step 2: Convert to fraction form
    103,695.70/155,428.35 = 44,521.30/x
  3. Step 3: Cross multiply
    103,695.70x = 155,428.35 × 44,521.30
  4. Step 4: Simplify right side
    103,695.70x = 6,919,872,198.86
  5. Step 5: Solve for x
    x = 6,919,872,198.86/103,695.70
  6. Step 6: Final answer
    x = 66,732.49

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1.5x scale

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.