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Finding the Fourth Proportional to 193,139.20, 289,730.40 and 60,018.40

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Solution

The fourth proportional to 193,139.20, 289,730.40 and 60,018.40 is: 90,034.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,139.20 : 289,730.40 = 60,018.40 : x
  2. Step 2: Convert to fraction form
    193,139.20/289,730.40 = 60,018.40/x
  3. Step 3: Cross multiply
    193,139.20x = 289,730.40 × 60,018.40
  4. Step 4: Simplify right side
    193,139.20x = 17,389,155,039.36
  5. Step 5: Solve for x
    x = 17,389,155,039.36/193,139.20
  6. Step 6: Final answer
    x = 90,034.31

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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.