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Finding the Fourth Proportional to 356,707.80, 534,608.10 and 146,107.80

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Solution

The fourth proportional to 356,707.80, 534,608.10 and 146,107.80 is: 218,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,707.80 : 534,608.10 = 146,107.80 : x
  2. Step 2: Convert to fraction form
    356,707.80/534,608.10 = 146,107.80/x
  3. Step 3: Cross multiply
    356,707.80x = 534,608.10 × 146,107.80
  4. Step 4: Simplify right side
    356,707.80x = 78,110,413,353.18
  5. Step 5: Solve for x
    x = 78,110,413,353.18/356,707.80
  6. Step 6: Final answer
    x = 218,975.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.