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Finding the Fourth Proportional to 219,640.30, 329,460.45 and 61,866.70

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Solution

The fourth proportional to 219,640.30, 329,460.45 and 61,866.70 is: 92,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,640.30 : 329,460.45 = 61,866.70 : x
  2. Step 2: Convert to fraction form
    219,640.30/329,460.45 = 61,866.70/x
  3. Step 3: Cross multiply
    219,640.30x = 329,460.45 × 61,866.70
  4. Step 4: Simplify right side
    219,640.30x = 20,382,630,822.02
  5. Step 5: Solve for x
    x = 20,382,630,822.02/219,640.30
  6. Step 6: Final answer
    x = 92,800.05

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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.