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Finding the Fourth Proportional to 219,547.86, 329,079.67 and 143,614.87

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Solution

The fourth proportional to 219,547.86, 329,079.67 and 143,614.87 is: 215,263.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,547.86 : 329,079.67 = 143,614.87 : x
  2. Step 2: Convert to fraction form
    219,547.86/329,079.67 = 143,614.87/x
  3. Step 3: Cross multiply
    219,547.86x = 329,079.67 × 143,614.87
  4. Step 4: Simplify right side
    219,547.86x = 47,260,735,503.86
  5. Step 5: Solve for x
    x = 47,260,735,503.86/219,547.86
  6. Step 6: Final answer
    x = 215,263.94

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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.