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Finding the Fourth Proportional to 472,215.40, 708,323.10 and 441,111.40

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Solution

The fourth proportional to 472,215.40, 708,323.10 and 441,111.40 is: 661,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,215.40 : 708,323.10 = 441,111.40 : x
  2. Step 2: Convert to fraction form
    472,215.40/708,323.10 = 441,111.40/x
  3. Step 3: Cross multiply
    472,215.40x = 708,323.10 × 441,111.40
  4. Step 4: Simplify right side
    472,215.40x = 312,449,394,293.34
  5. Step 5: Solve for x
    x = 312,449,394,293.34/472,215.40
  6. Step 6: Final answer
    x = 661,667.10

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Double scale
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Similar ratio
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1.5x scale

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.