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Finding the Fourth Proportional to 166,807.20, 249,870.60 and 103,432.80

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Solution

The fourth proportional to 166,807.20, 249,870.60 and 103,432.80 is: 154,938.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,807.20 : 249,870.60 = 103,432.80 : x
  2. Step 2: Convert to fraction form
    166,807.20/249,870.60 = 103,432.80/x
  3. Step 3: Cross multiply
    166,807.20x = 249,870.60 × 103,432.80
  4. Step 4: Simplify right side
    166,807.20x = 25,844,815,795.68
  5. Step 5: Solve for x
    x = 25,844,815,795.68/166,807.20
  6. Step 6: Final answer
    x = 154,938.25

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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.