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Finding the Fourth Proportional to 283,768.25, 391,602.84 and 156,448.40

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Solution

The fourth proportional to 283,768.25, 391,602.84 and 156,448.40 is: 215,900.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,768.25 : 391,602.84 = 156,448.40 : x
  2. Step 2: Convert to fraction form
    283,768.25/391,602.84 = 156,448.40/x
  3. Step 3: Cross multiply
    283,768.25x = 391,602.84 × 156,448.40
  4. Step 4: Simplify right side
    283,768.25x = 61,265,637,753.46
  5. Step 5: Solve for x
    x = 61,265,637,753.46/283,768.25
  6. Step 6: Final answer
    x = 215,900.26

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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.