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Finding the Fourth Proportional to 317,685.01, 438,403.33 and 181,721.23

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Solution

The fourth proportional to 317,685.01, 438,403.33 and 181,721.23 is: 250,774.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,685.01 : 438,403.33 = 181,721.23 : x
  2. Step 2: Convert to fraction form
    317,685.01/438,403.33 = 181,721.23/x
  3. Step 3: Cross multiply
    317,685.01x = 438,403.33 × 181,721.23
  4. Step 4: Simplify right side
    317,685.01x = 79,667,192,363.70
  5. Step 5: Solve for x
    x = 79,667,192,363.70/317,685.01
  6. Step 6: Final answer
    x = 250,774.16

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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.