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Finding the Fourth Proportional to 101,815.13, 152,726.81 and 48,479.67

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Solution

The fourth proportional to 101,815.13, 152,726.81 and 48,479.67 is: 72,721.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,815.13 : 152,726.81 = 48,479.67 : x
  2. Step 2: Convert to fraction form
    101,815.13/152,726.81 = 48,479.67/x
  3. Step 3: Cross multiply
    101,815.13x = 152,726.81 × 48,479.67
  4. Step 4: Simplify right side
    101,815.13x = 7,404,145,106.55
  5. Step 5: Solve for x
    x = 7,404,145,106.55/101,815.13
  6. Step 6: Final answer
    x = 72,721.47

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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.