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Finding the Fourth Proportional to 144,578.40, 216,856.80 and 60,316.80

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Solution

The fourth proportional to 144,578.40, 216,856.80 and 60,316.80 is: 90,470.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,578.40 : 216,856.80 = 60,316.80 : x
  2. Step 2: Convert to fraction form
    144,578.40/216,856.80 = 60,316.80/x
  3. Step 3: Cross multiply
    144,578.40x = 216,856.80 × 60,316.80
  4. Step 4: Simplify right side
    144,578.40x = 13,080,108,234.24
  5. Step 5: Solve for x
    x = 13,080,108,234.24/144,578.40
  6. Step 6: Final answer
    x = 90,470.69

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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.