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Finding the Fourth Proportional to 144,661.58, 216,931.37 and 54,689.11

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Solution

The fourth proportional to 144,661.58, 216,931.37 and 54,689.11 is: 82,010.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,661.58 : 216,931.37 = 54,689.11 : x
  2. Step 2: Convert to fraction form
    144,661.58/216,931.37 = 54,689.11/x
  3. Step 3: Cross multiply
    144,661.58x = 216,931.37 × 54,689.11
  4. Step 4: Simplify right side
    144,661.58x = 11,863,782,740.61
  5. Step 5: Solve for x
    x = 11,863,782,740.61/144,661.58
  6. Step 6: Final answer
    x = 82,010.60

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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.