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Finding the Fourth Proportional to 383,645.60, 529,211.12 and 240,156.53

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Solution

The fourth proportional to 383,645.60, 529,211.12 and 240,156.53 is: 331,278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,645.60 : 529,211.12 = 240,156.53 : x
  2. Step 2: Convert to fraction form
    383,645.60/529,211.12 = 240,156.53/x
  3. Step 3: Cross multiply
    383,645.60x = 529,211.12 × 240,156.53
  4. Step 4: Simplify right side
    383,645.60x = 127,093,506,155.49
  5. Step 5: Solve for x
    x = 127,093,506,155.49/383,645.60
  6. Step 6: Final answer
    x = 331,278.42

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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.