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Finding the Fourth Proportional to 283,803.28, 391,651.20 and 156,483.40

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Solution

The fourth proportional to 283,803.28, 391,651.20 and 156,483.40 is: 215,948.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,803.28 : 391,651.20 = 156,483.40 : x
  2. Step 2: Convert to fraction form
    283,803.28/391,651.20 = 156,483.40/x
  3. Step 3: Cross multiply
    283,803.28x = 391,651.20 × 156,483.40
  4. Step 4: Simplify right side
    283,803.28x = 61,286,911,390.08
  5. Step 5: Solve for x
    x = 61,286,911,390.08/283,803.28
  6. Step 6: Final answer
    x = 215,948.57

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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.