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Finding the Fourth Proportional to 455,854.38, 629,116.92 and 251,945.12

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Solution

The fourth proportional to 455,854.38, 629,116.92 and 251,945.12 is: 347,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,854.38 : 629,116.92 = 251,945.12 : x
  2. Step 2: Convert to fraction form
    455,854.38/629,116.92 = 251,945.12/x
  3. Step 3: Cross multiply
    455,854.38x = 629,116.92 × 251,945.12
  4. Step 4: Simplify right side
    455,854.38x = 158,502,937,903.43
  5. Step 5: Solve for x
    x = 158,502,937,903.43/455,854.38
  6. Step 6: Final answer
    x = 347,705.20

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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.