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Finding the Fourth Proportional to 352,642.20, 528,963.30 and 186,754.20

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Solution

The fourth proportional to 352,642.20, 528,963.30 and 186,754.20 is: 280,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,642.20 : 528,963.30 = 186,754.20 : x
  2. Step 2: Convert to fraction form
    352,642.20/528,963.30 = 186,754.20/x
  3. Step 3: Cross multiply
    352,642.20x = 528,963.30 × 186,754.20
  4. Step 4: Simplify right side
    352,642.20x = 98,786,117,920.86
  5. Step 5: Solve for x
    x = 98,786,117,920.86/352,642.20
  6. Step 6: Final answer
    x = 280,131.30

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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.