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Finding the Fourth Proportional to 283,661.46, 391,455.36 and 156,341.52

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Solution

The fourth proportional to 283,661.46, 391,455.36 and 156,341.52 is: 215,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,661.46 : 391,455.36 = 156,341.52 : x
  2. Step 2: Convert to fraction form
    283,661.46/391,455.36 = 156,341.52/x
  3. Step 3: Cross multiply
    283,661.46x = 391,455.36 × 156,341.52
  4. Step 4: Simplify right side
    283,661.46x = 61,200,725,994.55
  5. Step 5: Solve for x
    x = 61,200,725,994.55/283,661.46
  6. Step 6: Final answer
    x = 215,752.70

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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.