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Finding the Fourth Proportional to 42,534.92, 63,828.20 and 15,900.30

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Solution

The fourth proportional to 42,534.92, 63,828.20 and 15,900.30 is: 23,860.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,534.92 : 63,828.20 = 15,900.30 : x
  2. Step 2: Convert to fraction form
    42,534.92/63,828.20 = 15,900.30/x
  3. Step 3: Cross multiply
    42,534.92x = 63,828.20 × 15,900.30
  4. Step 4: Simplify right side
    42,534.92x = 1,014,887,568.21
  5. Step 5: Solve for x
    x = 1,014,887,568.21/42,534.92
  6. Step 6: Final answer
    x = 23,860.10

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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.