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Finding the Fourth Proportional to 283,357.40, 391,020.56 and 162,411.96

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Solution

The fourth proportional to 283,357.40, 391,020.56 and 162,411.96 is: 224,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,357.40 : 391,020.56 = 162,411.96 : x
  2. Step 2: Convert to fraction form
    283,357.40/391,020.56 = 162,411.96/x
  3. Step 3: Cross multiply
    283,357.40x = 391,020.56 × 162,411.96
  4. Step 4: Simplify right side
    283,357.40x = 63,506,415,549.90
  5. Step 5: Solve for x
    x = 63,506,415,549.90/283,357.40
  6. Step 6: Final answer
    x = 224,121.25

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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.