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Finding the Fourth Proportional to 144,378.84, 216,609.75 and 73,298.61

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Solution

The fourth proportional to 144,378.84, 216,609.75 and 73,298.61 is: 109,968.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,378.84 : 216,609.75 = 73,298.61 : x
  2. Step 2: Convert to fraction form
    144,378.84/216,609.75 = 73,298.61/x
  3. Step 3: Cross multiply
    144,378.84x = 216,609.75 × 73,298.61
  4. Step 4: Simplify right side
    144,378.84x = 15,877,193,587.45
  5. Step 5: Solve for x
    x = 15,877,193,587.45/144,378.84
  6. Step 6: Final answer
    x = 109,968.98

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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.