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Finding the Fourth Proportional to 52,809.99, 72,878.07 and 28,937.52

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Solution

The fourth proportional to 52,809.99, 72,878.07 and 28,937.52 is: 39,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,809.99 : 72,878.07 = 28,937.52 : x
  2. Step 2: Convert to fraction form
    52,809.99/72,878.07 = 28,937.52/x
  3. Step 3: Cross multiply
    52,809.99x = 72,878.07 × 28,937.52
  4. Step 4: Simplify right side
    52,809.99x = 2,108,910,608.19
  5. Step 5: Solve for x
    x = 2,108,910,608.19/52,809.99
  6. Step 6: Final answer
    x = 39,933.93

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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.