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Finding the Fourth Proportional to 110,257.80, 165,429.90 and 43,686.60

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Solution

The fourth proportional to 110,257.80, 165,429.90 and 43,686.60 is: 65,547.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,257.80 : 165,429.90 = 43,686.60 : x
  2. Step 2: Convert to fraction form
    110,257.80/165,429.90 = 43,686.60/x
  3. Step 3: Cross multiply
    110,257.80x = 165,429.90 × 43,686.60
  4. Step 4: Simplify right side
    110,257.80x = 7,227,069,869.34
  5. Step 5: Solve for x
    x = 7,227,069,869.34/110,257.80
  6. Step 6: Final answer
    x = 65,547.02

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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.