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Finding the Fourth Proportional to 868,684.94, 1,198,783.14 and 476,217.21

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Solution

The fourth proportional to 868,684.94, 1,198,783.14 and 476,217.21 is: 657,178.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,684.94 : 1,198,783.14 = 476,217.21 : x
  2. Step 2: Convert to fraction form
    868,684.94/1,198,783.14 = 476,217.21/x
  3. Step 3: Cross multiply
    868,684.94x = 1,198,783.14 × 476,217.21
  4. Step 4: Simplify right side
    868,684.94x = 570,881,162,325.84
  5. Step 5: Solve for x
    x = 570,881,162,325.84/868,684.94
  6. Step 6: Final answer
    x = 657,178.61

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Double scale
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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.