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Finding the Fourth Proportional to 25,865.30, 38,798.76 and 8,335.28

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Solution

The fourth proportional to 25,865.30, 38,798.76 and 8,335.28 is: 12,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,865.30 : 38,798.76 = 8,335.28 : x
  2. Step 2: Convert to fraction form
    25,865.30/38,798.76 = 8,335.28/x
  3. Step 3: Cross multiply
    25,865.30x = 38,798.76 × 8,335.28
  4. Step 4: Simplify right side
    25,865.30x = 323,398,528.25
  5. Step 5: Solve for x
    x = 323,398,528.25/25,865.30
  6. Step 6: Final answer
    x = 12,503.18

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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.