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Finding the Fourth Proportional to 536,641.80, 804,962.70 and 287,809.80

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Solution

The fourth proportional to 536,641.80, 804,962.70 and 287,809.80 is: 431,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,641.80 : 804,962.70 = 287,809.80 : x
  2. Step 2: Convert to fraction form
    536,641.80/804,962.70 = 287,809.80/x
  3. Step 3: Cross multiply
    536,641.80x = 804,962.70 × 287,809.80
  4. Step 4: Simplify right side
    536,641.80x = 231,676,153,694.46
  5. Step 5: Solve for x
    x = 231,676,153,694.46/536,641.80
  6. Step 6: Final answer
    x = 431,714.70

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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.