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Finding the Fourth Proportional to 84,013.50, 115,938.64 and 46,288.56

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Solution

The fourth proportional to 84,013.50, 115,938.64 and 46,288.56 is: 63,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,013.50 : 115,938.64 = 46,288.56 : x
  2. Step 2: Convert to fraction form
    84,013.50/115,938.64 = 46,288.56/x
  3. Step 3: Cross multiply
    84,013.50x = 115,938.64 × 46,288.56
  4. Step 4: Simplify right side
    84,013.50x = 5,366,632,693.96
  5. Step 5: Solve for x
    x = 5,366,632,693.96/84,013.50
  6. Step 6: Final answer
    x = 63,878.22

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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.