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Finding the Fourth Proportional to 219,969.25, 329,953.88 and 79,728.01

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Solution

The fourth proportional to 219,969.25, 329,953.88 and 79,728.01 is: 119,592.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,969.25 : 329,953.88 = 79,728.01 : x
  2. Step 2: Convert to fraction form
    219,969.25/329,953.88 = 79,728.01/x
  3. Step 3: Cross multiply
    219,969.25x = 329,953.88 × 79,728.01
  4. Step 4: Simplify right side
    219,969.25x = 26,306,565,845.54
  5. Step 5: Solve for x
    x = 26,306,565,845.54/219,969.25
  6. Step 6: Final answer
    x = 119,592.02

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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.