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Finding the Fourth Proportional to 354,887.20, 532,330.80 and 186,342.40

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Solution

The fourth proportional to 354,887.20, 532,330.80 and 186,342.40 is: 279,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,887.20 : 532,330.80 = 186,342.40 : x
  2. Step 2: Convert to fraction form
    354,887.20/532,330.80 = 186,342.40/x
  3. Step 3: Cross multiply
    354,887.20x = 532,330.80 × 186,342.40
  4. Step 4: Simplify right side
    354,887.20x = 99,195,798,865.92
  5. Step 5: Solve for x
    x = 99,195,798,865.92/354,887.20
  6. Step 6: Final answer
    x = 279,513.60

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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.