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Finding the Fourth Proportional to 103,624.18, 155,436.19 and 28,763.17

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Solution

The fourth proportional to 103,624.18, 155,436.19 and 28,763.17 is: 43,144.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,624.18 : 155,436.19 = 28,763.17 : x
  2. Step 2: Convert to fraction form
    103,624.18/155,436.19 = 28,763.17/x
  3. Step 3: Cross multiply
    103,624.18x = 155,436.19 × 28,763.17
  4. Step 4: Simplify right side
    103,624.18x = 4,470,837,557.12
  5. Step 5: Solve for x
    x = 4,470,837,557.12/103,624.18
  6. Step 6: Final answer
    x = 43,144.73

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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.