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Finding the Fourth Proportional to 352,718.40, 529,077.60 and 103,400.40

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Solution

The fourth proportional to 352,718.40, 529,077.60 and 103,400.40 is: 155,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,718.40 : 529,077.60 = 103,400.40 : x
  2. Step 2: Convert to fraction form
    352,718.40/529,077.60 = 103,400.40/x
  3. Step 3: Cross multiply
    352,718.40x = 529,077.60 × 103,400.40
  4. Step 4: Simplify right side
    352,718.40x = 54,706,835,471.04
  5. Step 5: Solve for x
    x = 54,706,835,471.04/352,718.40
  6. Step 6: Final answer
    x = 155,100.60

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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.