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Finding the Fourth Proportional to 316,471.64, 436,731 and 173,232.50

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Solution

The fourth proportional to 316,471.64, 436,731 and 173,232.50 is: 239,060.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,471.64 : 436,731 = 173,232.50 : x
  2. Step 2: Convert to fraction form
    316,471.64/436,731 = 173,232.50/x
  3. Step 3: Cross multiply
    316,471.64x = 436,731 × 173,232.50
  4. Step 4: Simplify right side
    316,471.64x = 75,656,002,957.50
  5. Step 5: Solve for x
    x = 75,656,002,957.50/316,471.64
  6. Step 6: Final answer
    x = 239,060.92

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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.