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Finding the Fourth Proportional to 404,581.40, 607,042.20 and 217,374.20

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Solution

The fourth proportional to 404,581.40, 607,042.20 and 217,374.20 is: 326,152.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,581.40 : 607,042.20 = 217,374.20 : x
  2. Step 2: Convert to fraction form
    404,581.40/607,042.20 = 217,374.20/x
  3. Step 3: Cross multiply
    404,581.40x = 607,042.20 × 217,374.20
  4. Step 4: Simplify right side
    404,581.40x = 131,955,312,591.24
  5. Step 5: Solve for x
    x = 131,955,312,591.24/404,581.40
  6. Step 6: Final answer
    x = 326,152.69

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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.