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Finding the Fourth Proportional to 128,317.01, 192,501.09 and 39,566.66

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Solution

The fourth proportional to 128,317.01, 192,501.09 and 39,566.66 is: 59,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,317.01 : 192,501.09 = 39,566.66 : x
  2. Step 2: Convert to fraction form
    128,317.01/192,501.09 = 39,566.66/x
  3. Step 3: Cross multiply
    128,317.01x = 192,501.09 × 39,566.66
  4. Step 4: Simplify right side
    128,317.01x = 7,616,624,215.15
  5. Step 5: Solve for x
    x = 7,616,624,215.15/128,317.01
  6. Step 6: Final answer
    x = 59,357.87

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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.