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Finding the Fourth Proportional to 84,042.25, 115,980.75 and 46,318.93

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Solution

The fourth proportional to 84,042.25, 115,980.75 and 46,318.93 is: 63,921.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,042.25 : 115,980.75 = 46,318.93 : x
  2. Step 2: Convert to fraction form
    84,042.25/115,980.75 = 46,318.93/x
  3. Step 3: Cross multiply
    84,042.25x = 115,980.75 × 46,318.93
  4. Step 4: Simplify right side
    84,042.25x = 5,372,104,240.60
  5. Step 5: Solve for x
    x = 5,372,104,240.60/84,042.25
  6. Step 6: Final answer
    x = 63,921.47

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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.