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Finding the Fourth Proportional to 86,557, 119,448.66 and 61,450.24

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Solution

The fourth proportional to 86,557, 119,448.66 and 61,450.24 is: 84,801.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,557 : 119,448.66 = 61,450.24 : x
  2. Step 2: Convert to fraction form
    86,557/119,448.66 = 61,450.24/x
  3. Step 3: Cross multiply
    86,557x = 119,448.66 × 61,450.24
  4. Step 4: Simplify right side
    86,557x = 7,340,148,824.68
  5. Step 5: Solve for x
    x = 7,340,148,824.68/86,557
  6. Step 6: Final answer
    x = 84,801.33

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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.