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Finding the Fourth Proportional to 111,893.71, 154,426.49 and 62,843.40

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Solution

The fourth proportional to 111,893.71, 154,426.49 and 62,843.40 is: 86,731.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,893.71 : 154,426.49 = 62,843.40 : x
  2. Step 2: Convert to fraction form
    111,893.71/154,426.49 = 62,843.40/x
  3. Step 3: Cross multiply
    111,893.71x = 154,426.49 × 62,843.40
  4. Step 4: Simplify right side
    111,893.71x = 9,704,685,681.67
  5. Step 5: Solve for x
    x = 9,704,685,681.67/111,893.71
  6. Step 6: Final answer
    x = 86,731.29

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1.5x scale

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.