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Finding the Fourth Proportional to 219,007.65, 328,511.48 and 149,023.65

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Solution

The fourth proportional to 219,007.65, 328,511.48 and 149,023.65 is: 223,535.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,007.65 : 328,511.48 = 149,023.65 : x
  2. Step 2: Convert to fraction form
    219,007.65/328,511.48 = 149,023.65/x
  3. Step 3: Cross multiply
    219,007.65x = 328,511.48 × 149,023.65
  4. Step 4: Simplify right side
    219,007.65x = 48,955,979,071.38
  5. Step 5: Solve for x
    x = 48,955,979,071.38/219,007.65
  6. Step 6: Final answer
    x = 223,535.48

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Similar ratio
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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.