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Finding the Fourth Proportional to 18,407.76, 25,402.82 and 10,341.47

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Solution

The fourth proportional to 18,407.76, 25,402.82 and 10,341.47 is: 14,271.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.76 : 25,402.82 = 10,341.47 : x
  2. Step 2: Convert to fraction form
    18,407.76/25,402.82 = 10,341.47/x
  3. Step 3: Cross multiply
    18,407.76x = 25,402.82 × 10,341.47
  4. Step 4: Simplify right side
    18,407.76x = 262,702,512.75
  5. Step 5: Solve for x
    x = 262,702,512.75/18,407.76
  6. Step 6: Final answer
    x = 14,271.29

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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.