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Finding the Fourth Proportional to 283,622.88, 391,402.16 and 156,303.04

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Solution

The fourth proportional to 283,622.88, 391,402.16 and 156,303.04 is: 215,699.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,622.88 : 391,402.16 = 156,303.04 : x
  2. Step 2: Convert to fraction form
    283,622.88/391,402.16 = 156,303.04/x
  3. Step 3: Cross multiply
    283,622.88x = 391,402.16 × 156,303.04
  4. Step 4: Simplify right side
    283,622.88x = 61,177,347,470.57
  5. Step 5: Solve for x
    x = 61,177,347,470.57/283,622.88
  6. Step 6: Final answer
    x = 215,699.62

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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.