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Finding the Fourth Proportional to 85,398.99, 128,083.97 and 23,054.91

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Solution

The fourth proportional to 85,398.99, 128,083.97 and 23,054.91 is: 34,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.99 : 128,083.97 = 23,054.91 : x
  2. Step 2: Convert to fraction form
    85,398.99/128,083.97 = 23,054.91/x
  3. Step 3: Cross multiply
    85,398.99x = 128,083.97 × 23,054.91
  4. Step 4: Simplify right side
    85,398.99x = 2,952,964,285.52
  5. Step 5: Solve for x
    x = 2,952,964,285.52/85,398.99
  6. Step 6: Final answer
    x = 34,578.45

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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.