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Finding the Fourth Proportional to 206,934.85, 310,300.67 and 93,117.90

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Solution

The fourth proportional to 206,934.85, 310,300.67 and 93,117.90 is: 139,631.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,934.85 : 310,300.67 = 93,117.90 : x
  2. Step 2: Convert to fraction form
    206,934.85/310,300.67 = 93,117.90/x
  3. Step 3: Cross multiply
    206,934.85x = 310,300.67 × 93,117.90
  4. Step 4: Simplify right side
    206,934.85x = 28,894,548,155.42
  5. Step 5: Solve for x
    x = 28,894,548,155.42/206,934.85
  6. Step 6: Final answer
    x = 139,631.14

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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.