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Finding the Fourth Proportional to 131,332.19, 196,978.64 and 47,079.63

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Solution

The fourth proportional to 131,332.19, 196,978.64 and 47,079.63 is: 70,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,332.19 : 196,978.64 = 47,079.63 : x
  2. Step 2: Convert to fraction form
    131,332.19/196,978.64 = 47,079.63/x
  3. Step 3: Cross multiply
    131,332.19x = 196,978.64 × 47,079.63
  4. Step 4: Simplify right side
    131,332.19x = 9,273,681,253.71
  5. Step 5: Solve for x
    x = 9,273,681,253.71/131,332.19
  6. Step 6: Final answer
    x = 70,612.40

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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.