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Finding the Fourth Proportional to 173,411.80, 260,117.70 and 61,218.70

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Solution

The fourth proportional to 173,411.80, 260,117.70 and 61,218.70 is: 91,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,411.80 : 260,117.70 = 61,218.70 : x
  2. Step 2: Convert to fraction form
    173,411.80/260,117.70 = 61,218.70/x
  3. Step 3: Cross multiply
    173,411.80x = 260,117.70 × 61,218.70
  4. Step 4: Simplify right side
    173,411.80x = 15,924,067,440.99
  5. Step 5: Solve for x
    x = 15,924,067,440.99/173,411.80
  6. Step 6: Final answer
    x = 91,828.05

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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.