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Finding the Fourth Proportional to 662,641.80, 993,962.70 and 557,665.80

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Solution

The fourth proportional to 662,641.80, 993,962.70 and 557,665.80 is: 836,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,641.80 : 993,962.70 = 557,665.80 : x
  2. Step 2: Convert to fraction form
    662,641.80/993,962.70 = 557,665.80/x
  3. Step 3: Cross multiply
    662,641.80x = 993,962.70 × 557,665.80
  4. Step 4: Simplify right side
    662,641.80x = 554,299,004,265.66
  5. Step 5: Solve for x
    x = 554,299,004,265.66/662,641.80
  6. Step 6: Final answer
    x = 836,498.70

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Double scale
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Similar ratio
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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.