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Finding the Fourth Proportional to 283,611.67, 391,365.60 and 156,287.23

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Solution

The fourth proportional to 283,611.67, 391,365.60 and 156,287.23 is: 215,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,611.67 : 391,365.60 = 156,287.23 : x
  2. Step 2: Convert to fraction form
    283,611.67/391,365.60 = 156,287.23/x
  3. Step 3: Cross multiply
    283,611.67x = 391,365.60 × 156,287.23
  4. Step 4: Simplify right side
    283,611.67x = 61,165,445,541.29
  5. Step 5: Solve for x
    x = 61,165,445,541.29/283,611.67
  6. Step 6: Final answer
    x = 215,666.18

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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.