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Finding the Fourth Proportional to 144,708.76, 216,888.18 and 74,549.80

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Solution

The fourth proportional to 144,708.76, 216,888.18 and 74,549.80 is: 111,734.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,708.76 : 216,888.18 = 74,549.80 : x
  2. Step 2: Convert to fraction form
    144,708.76/216,888.18 = 74,549.80/x
  3. Step 3: Cross multiply
    144,708.76x = 216,888.18 × 74,549.80
  4. Step 4: Simplify right side
    144,708.76x = 16,168,970,441.36
  5. Step 5: Solve for x
    x = 16,168,970,441.36/144,708.76
  6. Step 6: Final answer
    x = 111,734.57

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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.