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Finding the Fourth Proportional to 472,956.80, 708,268.80 and 314,326.40

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Solution

The fourth proportional to 472,956.80, 708,268.80 and 314,326.40 is: 470,714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,956.80 : 708,268.80 = 314,326.40 : x
  2. Step 2: Convert to fraction form
    472,956.80/708,268.80 = 314,326.40/x
  3. Step 3: Cross multiply
    472,956.80x = 708,268.80 × 314,326.40
  4. Step 4: Simplify right side
    472,956.80x = 222,627,582,136.32
  5. Step 5: Solve for x
    x = 222,627,582,136.32/472,956.80
  6. Step 6: Final answer
    x = 470,714.41

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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.