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Finding the Fourth Proportional to 439,056.65, 605,902.88 and 257,770.76

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Solution

The fourth proportional to 439,056.65, 605,902.88 and 257,770.76 is: 355,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,056.65 : 605,902.88 = 257,770.76 : x
  2. Step 2: Convert to fraction form
    439,056.65/605,902.88 = 257,770.76/x
  3. Step 3: Cross multiply
    439,056.65x = 605,902.88 × 257,770.76
  4. Step 4: Simplify right side
    439,056.65x = 156,184,043,478.70
  5. Step 5: Solve for x
    x = 156,184,043,478.70/439,056.65
  6. Step 6: Final answer
    x = 355,726.40

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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.