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Finding the Fourth Proportional to 116,818.80, 175,271.40 and 112,498.80

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Solution

The fourth proportional to 116,818.80, 175,271.40 and 112,498.80 is: 168,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,818.80 : 175,271.40 = 112,498.80 : x
  2. Step 2: Convert to fraction form
    116,818.80/175,271.40 = 112,498.80/x
  3. Step 3: Cross multiply
    116,818.80x = 175,271.40 × 112,498.80
  4. Step 4: Simplify right side
    116,818.80x = 19,717,822,174.32
  5. Step 5: Solve for x
    x = 19,717,822,174.32/116,818.80
  6. Step 6: Final answer
    x = 168,789.80

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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.