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Finding the Fourth Proportional to 38,993, 58,495.58 and 12,691.52

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Solution

The fourth proportional to 38,993, 58,495.58 and 12,691.52 is: 19,039.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,993 : 58,495.58 = 12,691.52 : x
  2. Step 2: Convert to fraction form
    38,993/58,495.58 = 12,691.52/x
  3. Step 3: Cross multiply
    38,993x = 58,495.58 × 12,691.52
  4. Step 4: Simplify right side
    38,993x = 742,397,823.48
  5. Step 5: Solve for x
    x = 742,397,823.48/38,993
  6. Step 6: Final answer
    x = 19,039.26

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1.5x scale

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.