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Finding the Fourth Proportional to 865,698.60, 1,298,547.90 and 567,100.20

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Solution

The fourth proportional to 865,698.60, 1,298,547.90 and 567,100.20 is: 850,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,698.60 : 1,298,547.90 = 567,100.20 : x
  2. Step 2: Convert to fraction form
    865,698.60/1,298,547.90 = 567,100.20/x
  3. Step 3: Cross multiply
    865,698.60x = 1,298,547.90 × 567,100.20
  4. Step 4: Simplify right side
    865,698.60x = 736,406,773,799.58
  5. Step 5: Solve for x
    x = 736,406,773,799.58/865,698.60
  6. Step 6: Final answer
    x = 850,650.30

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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.