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Finding the Fourth Proportional to 354,722.27, 488,684.98 and 247,097.57

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Solution

The fourth proportional to 354,722.27, 488,684.98 and 247,097.57 is: 340,415.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,722.27 : 488,684.98 = 247,097.57 : x
  2. Step 2: Convert to fraction form
    354,722.27/488,684.98 = 247,097.57/x
  3. Step 3: Cross multiply
    354,722.27x = 488,684.98 × 247,097.57
  4. Step 4: Simplify right side
    354,722.27x = 120,752,871,053.50
  5. Step 5: Solve for x
    x = 120,752,871,053.50/354,722.27
  6. Step 6: Final answer
    x = 340,415.25

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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.