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Finding the Fourth Proportional to 86,214.26, 118,974.51 and 48,488.51

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Solution

The fourth proportional to 86,214.26, 118,974.51 and 48,488.51 is: 66,913.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,214.26 : 118,974.51 = 48,488.51 : x
  2. Step 2: Convert to fraction form
    86,214.26/118,974.51 = 48,488.51/x
  3. Step 3: Cross multiply
    86,214.26x = 118,974.51 × 48,488.51
  4. Step 4: Simplify right side
    86,214.26x = 5,768,896,123.01
  5. Step 5: Solve for x
    x = 5,768,896,123.01/86,214.26
  6. Step 6: Final answer
    x = 66,913.48

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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.