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Finding the Fourth Proportional to 193,011.60, 289,567.80 and 74,686.80

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Solution

The fourth proportional to 193,011.60, 289,567.80 and 74,686.80 is: 112,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,011.60 : 289,567.80 = 74,686.80 : x
  2. Step 2: Convert to fraction form
    193,011.60/289,567.80 = 74,686.80/x
  3. Step 3: Cross multiply
    193,011.60x = 289,567.80 × 74,686.80
  4. Step 4: Simplify right side
    193,011.60x = 21,626,892,365.04
  5. Step 5: Solve for x
    x = 21,626,892,365.04/193,011.60
  6. Step 6: Final answer
    x = 112,049.70

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1.5x scale

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.