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Finding the Fourth Proportional to 534,748.20, 802,122.30 and 476,687.40

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Solution

The fourth proportional to 534,748.20, 802,122.30 and 476,687.40 is: 715,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,748.20 : 802,122.30 = 476,687.40 : x
  2. Step 2: Convert to fraction form
    534,748.20/802,122.30 = 476,687.40/x
  3. Step 3: Cross multiply
    534,748.20x = 802,122.30 × 476,687.40
  4. Step 4: Simplify right side
    534,748.20x = 382,361,593,669.02
  5. Step 5: Solve for x
    x = 382,361,593,669.02/534,748.20
  6. Step 6: Final answer
    x = 715,031.10

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