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Finding the Fourth Proportional to 606,966.40, 911,000.40 and 307,655.20

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Solution

The fourth proportional to 606,966.40, 911,000.40 and 307,655.20 is: 461,761.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,966.40 : 911,000.40 = 307,655.20 : x
  2. Step 2: Convert to fraction form
    606,966.40/911,000.40 = 307,655.20/x
  3. Step 3: Cross multiply
    606,966.40x = 911,000.40 × 307,655.20
  4. Step 4: Simplify right side
    606,966.40x = 280,274,010,262.08
  5. Step 5: Solve for x
    x = 280,274,010,262.08/606,966.40
  6. Step 6: Final answer
    x = 461,761.99

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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.