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Finding the Fourth Proportional to 661,105.67, 911,853.18 and 606,830.13

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Solution

The fourth proportional to 661,105.67, 911,853.18 and 606,830.13 is: 836,991.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,105.67 : 911,853.18 = 606,830.13 : x
  2. Step 2: Convert to fraction form
    661,105.67/911,853.18 = 606,830.13/x
  3. Step 3: Cross multiply
    661,105.67x = 911,853.18 × 606,830.13
  4. Step 4: Simplify right side
    661,105.67x = 553,339,983,760.31
  5. Step 5: Solve for x
    x = 553,339,983,760.31/661,105.67
  6. Step 6: Final answer
    x = 836,991.74

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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.