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Finding the Fourth Proportional to 536,647.10, 804,970.65 and 256,711.10

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Solution

The fourth proportional to 536,647.10, 804,970.65 and 256,711.10 is: 385,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,647.10 : 804,970.65 = 256,711.10 : x
  2. Step 2: Convert to fraction form
    536,647.10/804,970.65 = 256,711.10/x
  3. Step 3: Cross multiply
    536,647.10x = 804,970.65 × 256,711.10
  4. Step 4: Simplify right side
    536,647.10x = 206,644,901,029.22
  5. Step 5: Solve for x
    x = 206,644,901,029.22/536,647.10
  6. Step 6: Final answer
    x = 385,066.65

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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.