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Finding the Fourth Proportional to 144,705.40, 217,047.30 and 60,443.80

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Solution

The fourth proportional to 144,705.40, 217,047.30 and 60,443.80 is: 90,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,705.40 : 217,047.30 = 60,443.80 : x
  2. Step 2: Convert to fraction form
    144,705.40/217,047.30 = 60,443.80/x
  3. Step 3: Cross multiply
    144,705.40x = 217,047.30 × 60,443.80
  4. Step 4: Simplify right side
    144,705.40x = 13,119,163,591.74
  5. Step 5: Solve for x
    x = 13,119,163,591.74/144,705.40
  6. Step 6: Final answer
    x = 90,661.19

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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.