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Finding the Fourth Proportional to 518,821.26, 715,984.26 and 292,466.76

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Solution

The fourth proportional to 518,821.26, 715,984.26 and 292,466.76 is: 403,610.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,821.26 : 715,984.26 = 292,466.76 : x
  2. Step 2: Convert to fraction form
    518,821.26/715,984.26 = 292,466.76/x
  3. Step 3: Cross multiply
    518,821.26x = 715,984.26 × 292,466.76
  4. Step 4: Simplify right side
    518,821.26x = 209,401,596,733.20
  5. Step 5: Solve for x
    x = 209,401,596,733.20/518,821.26
  6. Step 6: Final answer
    x = 403,610.29

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.