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Finding the Fourth Proportional to 249,863.56, 344,811.77 and 140,991.01

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Solution

The fourth proportional to 249,863.56, 344,811.77 and 140,991.01 is: 194,567.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,863.56 : 344,811.77 = 140,991.01 : x
  2. Step 2: Convert to fraction form
    249,863.56/344,811.77 = 140,991.01/x
  3. Step 3: Cross multiply
    249,863.56x = 344,811.77 × 140,991.01
  4. Step 4: Simplify right side
    249,863.56x = 48,615,358,145.20
  5. Step 5: Solve for x
    x = 48,615,358,145.20/249,863.56
  6. Step 6: Final answer
    x = 194,567.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.