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Finding the Fourth Proportional to 283,352.88, 391,026.60 and 156,028.80

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Solution

The fourth proportional to 283,352.88, 391,026.60 and 156,028.80 is: 215,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,352.88 : 391,026.60 = 156,028.80 : x
  2. Step 2: Convert to fraction form
    283,352.88/391,026.60 = 156,028.80/x
  3. Step 3: Cross multiply
    283,352.88x = 391,026.60 × 156,028.80
  4. Step 4: Simplify right side
    283,352.88x = 61,011,411,166.08
  5. Step 5: Solve for x
    x = 61,011,411,166.08/283,352.88
  6. Step 6: Final answer
    x = 215,319.54

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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.