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Finding the Fourth Proportional to 316,502.87, 436,784.28 and 173,262.92

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Solution

The fourth proportional to 316,502.87, 436,784.28 and 173,262.92 is: 239,108.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,502.87 : 436,784.28 = 173,262.92 : x
  2. Step 2: Convert to fraction form
    316,502.87/436,784.28 = 173,262.92/x
  3. Step 3: Cross multiply
    316,502.87x = 436,784.28 × 173,262.92
  4. Step 4: Simplify right side
    316,502.87x = 75,678,519,762.90
  5. Step 5: Solve for x
    x = 75,678,519,762.90/316,502.87
  6. Step 6: Final answer
    x = 239,108.48

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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.