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Finding the Fourth Proportional to 476,712.90, 715,069.26 and 121,714.20

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Solution

The fourth proportional to 476,712.90, 715,069.26 and 121,714.20 is: 182,571.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,712.90 : 715,069.26 = 121,714.20 : x
  2. Step 2: Convert to fraction form
    476,712.90/715,069.26 = 121,714.20/x
  3. Step 3: Cross multiply
    476,712.90x = 715,069.26 × 121,714.20
  4. Step 4: Simplify right side
    476,712.90x = 87,034,082,925.49
  5. Step 5: Solve for x
    x = 87,034,082,925.49/476,712.90
  6. Step 6: Final answer
    x = 182,571.28

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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.