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Finding the Fourth Proportional to 607,115.85, 911,149.59 and 423,552.89

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Solution

The fourth proportional to 607,115.85, 911,149.59 and 423,552.89 is: 635,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,115.85 : 911,149.59 = 423,552.89 : x
  2. Step 2: Convert to fraction form
    607,115.85/911,149.59 = 423,552.89/x
  3. Step 3: Cross multiply
    607,115.85x = 911,149.59 × 423,552.89
  4. Step 4: Simplify right side
    607,115.85x = 385,920,042,066.82
  5. Step 5: Solve for x
    x = 385,920,042,066.82/607,115.85
  6. Step 6: Final answer
    x = 635,661.29

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Double scale
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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.