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Finding the Fourth Proportional to 316,351.90, 436,565.54 and 173,111.90

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Solution

The fourth proportional to 316,351.90, 436,565.54 and 173,111.90 is: 238,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,351.90 : 436,565.54 = 173,111.90 : x
  2. Step 2: Convert to fraction form
    316,351.90/436,565.54 = 173,111.90/x
  3. Step 3: Cross multiply
    316,351.90x = 436,565.54 × 173,111.90
  4. Step 4: Simplify right side
    316,351.90x = 75,574,690,103.93
  5. Step 5: Solve for x
    x = 75,574,690,103.93/316,351.90
  6. Step 6: Final answer
    x = 238,894.38

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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.