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Finding the Fourth Proportional to 636,102.10, 877,805.92 and 345,706.77

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Solution

The fourth proportional to 636,102.10, 877,805.92 and 345,706.77 is: 477,067.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,102.10 : 877,805.92 = 345,706.77 : x
  2. Step 2: Convert to fraction form
    636,102.10/877,805.92 = 345,706.77/x
  3. Step 3: Cross multiply
    636,102.10x = 877,805.92 × 345,706.77
  4. Step 4: Simplify right side
    636,102.10x = 303,463,449,290.08
  5. Step 5: Solve for x
    x = 303,463,449,290.08/636,102.10
  6. Step 6: Final answer
    x = 477,067.20

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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.