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Finding the Fourth Proportional to 411,243.36, 616,869.28 and 144,954.24

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Solution

The fourth proportional to 411,243.36, 616,869.28 and 144,954.24 is: 217,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,243.36 : 616,869.28 = 144,954.24 : x
  2. Step 2: Convert to fraction form
    411,243.36/616,869.28 = 144,954.24/x
  3. Step 3: Cross multiply
    411,243.36x = 616,869.28 × 144,954.24
  4. Step 4: Simplify right side
    411,243.36x = 89,417,817,661.75
  5. Step 5: Solve for x
    x = 89,417,817,661.75/411,243.36
  6. Step 6: Final answer
    x = 217,432.85

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1.5x scale

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.