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Finding the Fourth Proportional to 283,810.95, 391,641.24 and 156,487.59

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Solution

The fourth proportional to 283,810.95, 391,641.24 and 156,487.59 is: 215,943.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,810.95 : 391,641.24 = 156,487.59 : x
  2. Step 2: Convert to fraction form
    283,810.95/391,641.24 = 156,487.59/x
  3. Step 3: Cross multiply
    283,810.95x = 391,641.24 × 156,487.59
  4. Step 4: Simplify right side
    283,810.95x = 61,286,993,792.21
  5. Step 5: Solve for x
    x = 61,286,993,792.21/283,810.95
  6. Step 6: Final answer
    x = 215,943.02

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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.