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Finding the Fourth Proportional to 354,291.60, 531,097.20 and 117,512.40

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Solution

The fourth proportional to 354,291.60, 531,097.20 and 117,512.40 is: 176,155.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,291.60 : 531,097.20 = 117,512.40 : x
  2. Step 2: Convert to fraction form
    354,291.60/531,097.20 = 117,512.40/x
  3. Step 3: Cross multiply
    354,291.60x = 531,097.20 × 117,512.40
  4. Step 4: Simplify right side
    354,291.60x = 62,410,506,605.28
  5. Step 5: Solve for x
    x = 62,410,506,605.28/354,291.60
  6. Step 6: Final answer
    x = 176,155.76

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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.