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Finding the Fourth Proportional to 609,987.76, 914,140.16 and 440,154.88

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Solution

The fourth proportional to 609,987.76, 914,140.16 and 440,154.88 is: 659,625.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,987.76 : 914,140.16 = 440,154.88 : x
  2. Step 2: Convert to fraction form
    609,987.76/914,140.16 = 440,154.88/x
  3. Step 3: Cross multiply
    609,987.76x = 914,140.16 × 440,154.88
  4. Step 4: Simplify right side
    609,987.76x = 402,363,252,427.98
  5. Step 5: Solve for x
    x = 402,363,252,427.98/609,987.76
  6. Step 6: Final answer
    x = 659,625.12

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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.