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Finding the Fourth Proportional to 638,154.40, 958,009.20 and 633,488.80

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Solution

The fourth proportional to 638,154.40, 958,009.20 and 633,488.80 is: 951,005.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,154.40 : 958,009.20 = 633,488.80 : x
  2. Step 2: Convert to fraction form
    638,154.40/958,009.20 = 633,488.80/x
  3. Step 3: Cross multiply
    638,154.40x = 958,009.20 × 633,488.80
  4. Step 4: Simplify right side
    638,154.40x = 606,888,098,496.96
  5. Step 5: Solve for x
    x = 606,888,098,496.96/638,154.40
  6. Step 6: Final answer
    x = 951,005.11

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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.