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Finding the Fourth Proportional to 38,356.39, 57,484.90 and 30,963.79

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Solution

The fourth proportional to 38,356.39, 57,484.90 and 30,963.79 is: 46,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,356.39 : 57,484.90 = 30,963.79 : x
  2. Step 2: Convert to fraction form
    38,356.39/57,484.90 = 30,963.79/x
  3. Step 3: Cross multiply
    38,356.39x = 57,484.90 × 30,963.79
  4. Step 4: Simplify right side
    38,356.39x = 1,779,950,371.77
  5. Step 5: Solve for x
    x = 1,779,950,371.77/38,356.39
  6. Step 6: Final answer
    x = 46,405.58

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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.