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Finding the Fourth Proportional to 208,693.04, 287,996.10 and 113,199.62

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Solution

The fourth proportional to 208,693.04, 287,996.10 and 113,199.62 is: 156,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,693.04 : 287,996.10 = 113,199.62 : x
  2. Step 2: Convert to fraction form
    208,693.04/287,996.10 = 113,199.62/x
  3. Step 3: Cross multiply
    208,693.04x = 287,996.10 × 113,199.62
  4. Step 4: Simplify right side
    208,693.04x = 32,601,049,081.48
  5. Step 5: Solve for x
    x = 32,601,049,081.48/208,693.04
  6. Step 6: Final answer
    x = 156,215.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.