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Finding the Fourth Proportional to 261,953.44, 392,932.90 and 209,695.12

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Solution

The fourth proportional to 261,953.44, 392,932.90 and 209,695.12 is: 314,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,953.44 : 392,932.90 = 209,695.12 : x
  2. Step 2: Convert to fraction form
    261,953.44/392,932.90 = 209,695.12/x
  3. Step 3: Cross multiply
    261,953.44x = 392,932.90 × 209,695.12
  4. Step 4: Simplify right side
    261,953.44x = 82,396,111,617.45
  5. Step 5: Solve for x
    x = 82,396,111,617.45/261,953.44
  6. Step 6: Final answer
    x = 314,544.87

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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.