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Finding the Fourth Proportional to 217,873.76, 300,619.15 and 127,188.57

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Solution

The fourth proportional to 217,873.76, 300,619.15 and 127,188.57 is: 175,493.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,873.76 : 300,619.15 = 127,188.57 : x
  2. Step 2: Convert to fraction form
    217,873.76/300,619.15 = 127,188.57/x
  3. Step 3: Cross multiply
    217,873.76x = 300,619.15 × 127,188.57
  4. Step 4: Simplify right side
    217,873.76x = 38,235,319,051.57
  5. Step 5: Solve for x
    x = 38,235,319,051.57/217,873.76
  6. Step 6: Final answer
    x = 175,493.00

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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.