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Finding the Fourth Proportional to 317,862.83, 438,675.29 and 181,939.42

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Solution

The fourth proportional to 317,862.83, 438,675.29 and 181,939.42 is: 251,090.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,862.83 : 438,675.29 = 181,939.42 : x
  2. Step 2: Convert to fraction form
    317,862.83/438,675.29 = 181,939.42/x
  3. Step 3: Cross multiply
    317,862.83x = 438,675.29 × 181,939.42
  4. Step 4: Simplify right side
    317,862.83x = 79,812,326,707.71
  5. Step 5: Solve for x
    x = 79,812,326,707.71/317,862.83
  6. Step 6: Final answer
    x = 251,090.47

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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.