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Finding the Fourth Proportional to 219,313.60, 328,981.20 and 114,337.60

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Solution

The fourth proportional to 219,313.60, 328,981.20 and 114,337.60 is: 171,512.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,313.60 : 328,981.20 = 114,337.60 : x
  2. Step 2: Convert to fraction form
    219,313.60/328,981.20 = 114,337.60/x
  3. Step 3: Cross multiply
    219,313.60x = 328,981.20 × 114,337.60
  4. Step 4: Simplify right side
    219,313.60x = 37,614,920,853.12
  5. Step 5: Solve for x
    x = 37,614,920,853.12/219,313.60
  6. Step 6: Final answer
    x = 171,512.03

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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.