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Finding the Fourth Proportional to 393,530.40, 590,579.28 and 156,736.08

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Solution

The fourth proportional to 393,530.40, 590,579.28 and 156,736.08 is: 235,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,530.40 : 590,579.28 = 156,736.08 : x
  2. Step 2: Convert to fraction form
    393,530.40/590,579.28 = 156,736.08/x
  3. Step 3: Cross multiply
    393,530.40x = 590,579.28 × 156,736.08
  4. Step 4: Simplify right side
    393,530.40x = 92,565,081,276.42
  5. Step 5: Solve for x
    x = 92,565,081,276.42/393,530.40
  6. Step 6: Final answer
    x = 235,217.10

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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.