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Finding the Fourth Proportional to 534,751.20, 802,126.80 and 476,690.40

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Solution

The fourth proportional to 534,751.20, 802,126.80 and 476,690.40 is: 715,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,751.20 : 802,126.80 = 476,690.40 : x
  2. Step 2: Convert to fraction form
    534,751.20/802,126.80 = 476,690.40/x
  3. Step 3: Cross multiply
    534,751.20x = 802,126.80 × 476,690.40
  4. Step 4: Simplify right side
    534,751.20x = 382,366,145,142.72
  5. Step 5: Solve for x
    x = 382,366,145,142.72/534,751.20
  6. Step 6: Final answer
    x = 715,035.60

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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.