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Finding the Fourth Proportional to 317,885.28, 438,663.52 and 174,642.46

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Solution

The fourth proportional to 317,885.28, 438,663.52 and 174,642.46 is: 240,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,885.28 : 438,663.52 = 174,642.46 : x
  2. Step 2: Convert to fraction form
    317,885.28/438,663.52 = 174,642.46/x
  3. Step 3: Cross multiply
    317,885.28x = 438,663.52 × 174,642.46
  4. Step 4: Simplify right side
    317,885.28x = 76,609,276,245.06
  5. Step 5: Solve for x
    x = 76,609,276,245.06/317,885.28
  6. Step 6: Final answer
    x = 240,996.61

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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.