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Finding the Fourth Proportional to 352,129.20, 529,230.60 and 345,908.40

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Solution

The fourth proportional to 352,129.20, 529,230.60 and 345,908.40 is: 519,881.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,129.20 : 529,230.60 = 345,908.40 : x
  2. Step 2: Convert to fraction form
    352,129.20/529,230.60 = 345,908.40/x
  3. Step 3: Cross multiply
    352,129.20x = 529,230.60 × 345,908.40
  4. Step 4: Simplify right side
    352,129.20x = 183,065,310,077.04
  5. Step 5: Solve for x
    x = 183,065,310,077.04/352,129.20
  6. Step 6: Final answer
    x = 519,881.08

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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.