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Finding the Fourth Proportional to 25,790.76, 38,703.42 and 9,374.76

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Solution

The fourth proportional to 25,790.76, 38,703.42 and 9,374.76 is: 14,068.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,790.76 : 38,703.42 = 9,374.76 : x
  2. Step 2: Convert to fraction form
    25,790.76/38,703.42 = 9,374.76/x
  3. Step 3: Cross multiply
    25,790.76x = 38,703.42 × 9,374.76
  4. Step 4: Simplify right side
    25,790.76x = 362,835,273.68
  5. Step 5: Solve for x
    x = 362,835,273.68/25,790.76
  6. Step 6: Final answer
    x = 14,068.42

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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.