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Finding the Fourth Proportional to 111,653, 154,081.22 and 61,352.36

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Solution

The fourth proportional to 111,653, 154,081.22 and 61,352.36 is: 84,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,653 : 154,081.22 = 61,352.36 : x
  2. Step 2: Convert to fraction form
    111,653/154,081.22 = 61,352.36/x
  3. Step 3: Cross multiply
    111,653x = 154,081.22 × 61,352.36
  4. Step 4: Simplify right side
    111,653x = 9,453,246,478.68
  5. Step 5: Solve for x
    x = 9,453,246,478.68/111,653
  6. Step 6: Final answer
    x = 84,666.30

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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.