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Finding the Fourth Proportional to 106,354.15, 146,768.04 and 57,955.97

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Solution

The fourth proportional to 106,354.15, 146,768.04 and 57,955.97 is: 79,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,354.15 : 146,768.04 = 57,955.97 : x
  2. Step 2: Convert to fraction form
    106,354.15/146,768.04 = 57,955.97/x
  3. Step 3: Cross multiply
    106,354.15x = 146,768.04 × 57,955.97
  4. Step 4: Simplify right side
    106,354.15x = 8,506,084,490.12
  5. Step 5: Solve for x
    x = 8,506,084,490.12/106,354.15
  6. Step 6: Final answer
    x = 79,978.87

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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.