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Finding the Fourth Proportional to 566,440.35, 781,699.98 and 311,791.53

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Solution

The fourth proportional to 566,440.35, 781,699.98 and 311,791.53 is: 430,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,440.35 : 781,699.98 = 311,791.53 : x
  2. Step 2: Convert to fraction form
    566,440.35/781,699.98 = 311,791.53/x
  3. Step 3: Cross multiply
    566,440.35x = 781,699.98 × 311,791.53
  4. Step 4: Simplify right side
    566,440.35x = 243,727,432,765.17
  5. Step 5: Solve for x
    x = 243,727,432,765.17/566,440.35
  6. Step 6: Final answer
    x = 430,279.08

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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.