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Finding the Fourth Proportional to 118,103.64, 176,958.20 and 82,980.40

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Solution

The fourth proportional to 118,103.64, 176,958.20 and 82,980.40 is: 124,332.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,103.64 : 176,958.20 = 82,980.40 : x
  2. Step 2: Convert to fraction form
    118,103.64/176,958.20 = 82,980.40/x
  3. Step 3: Cross multiply
    118,103.64x = 176,958.20 × 82,980.40
  4. Step 4: Simplify right side
    118,103.64x = 14,684,062,219.28
  5. Step 5: Solve for x
    x = 14,684,062,219.28/118,103.64
  6. Step 6: Final answer
    x = 124,332.00

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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.