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Finding the Fourth Proportional to 192,686.68, 289,073.94 and 103,938.22

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Solution

The fourth proportional to 192,686.68, 289,073.94 and 103,938.22 is: 155,931.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,686.68 : 289,073.94 = 103,938.22 : x
  2. Step 2: Convert to fraction form
    192,686.68/289,073.94 = 103,938.22/x
  3. Step 3: Cross multiply
    192,686.68x = 289,073.94 × 103,938.22
  4. Step 4: Simplify right side
    192,686.68x = 30,045,830,771.99
  5. Step 5: Solve for x
    x = 30,045,830,771.99/192,686.68
  6. Step 6: Final answer
    x = 155,931.02

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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.