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Finding the Fourth Proportional to 71,028.80, 106,543.20 and 44,590.40

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Solution

The fourth proportional to 71,028.80, 106,543.20 and 44,590.40 is: 66,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,028.80 : 106,543.20 = 44,590.40 : x
  2. Step 2: Convert to fraction form
    71,028.80/106,543.20 = 44,590.40/x
  3. Step 3: Cross multiply
    71,028.80x = 106,543.20 × 44,590.40
  4. Step 4: Simplify right side
    71,028.80x = 4,750,803,905.28
  5. Step 5: Solve for x
    x = 4,750,803,905.28/71,028.80
  6. Step 6: Final answer
    x = 66,885.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.