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Finding the Fourth Proportional to 292,482.80, 438,724.20 and 217,833.20

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Solution

The fourth proportional to 292,482.80, 438,724.20 and 217,833.20 is: 326,749.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,482.80 : 438,724.20 = 217,833.20 : x
  2. Step 2: Convert to fraction form
    292,482.80/438,724.20 = 217,833.20/x
  3. Step 3: Cross multiply
    292,482.80x = 438,724.20 × 217,833.20
  4. Step 4: Simplify right side
    292,482.80x = 95,568,696,403.44
  5. Step 5: Solve for x
    x = 95,568,696,403.44/292,482.80
  6. Step 6: Final answer
    x = 326,749.80

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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.