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Finding the Fourth Proportional to 317,402.28, 438,015.15 and 181,439.19

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Solution

The fourth proportional to 317,402.28, 438,015.15 and 181,439.19 is: 250,386.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,402.28 : 438,015.15 = 181,439.19 : x
  2. Step 2: Convert to fraction form
    317,402.28/438,015.15 = 181,439.19/x
  3. Step 3: Cross multiply
    317,402.28x = 438,015.15 × 181,439.19
  4. Step 4: Simplify right side
    317,402.28x = 79,473,114,023.73
  5. Step 5: Solve for x
    x = 79,473,114,023.73/317,402.28
  6. Step 6: Final answer
    x = 250,386.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.