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Finding the Fourth Proportional to 316,542.86, 436,830.42 and 173,316.24

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Solution

The fourth proportional to 316,542.86, 436,830.42 and 173,316.24 is: 239,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,542.86 : 436,830.42 = 173,316.24 : x
  2. Step 2: Convert to fraction form
    316,542.86/436,830.42 = 173,316.24/x
  3. Step 3: Cross multiply
    316,542.86x = 436,830.42 × 173,316.24
  4. Step 4: Simplify right side
    316,542.86x = 75,709,805,912.02
  5. Step 5: Solve for x
    x = 75,709,805,912.02/316,542.86
  6. Step 6: Final answer
    x = 239,177.11

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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.