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Finding the Fourth Proportional to 39,951.69, 59,927.54 and 13,656.66

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Solution

The fourth proportional to 39,951.69, 59,927.54 and 13,656.66 is: 20,484.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,951.69 : 59,927.54 = 13,656.66 : x
  2. Step 2: Convert to fraction form
    39,951.69/59,927.54 = 13,656.66/x
  3. Step 3: Cross multiply
    39,951.69x = 59,927.54 × 13,656.66
  4. Step 4: Simplify right side
    39,951.69x = 818,409,970.13
  5. Step 5: Solve for x
    x = 818,409,970.13/39,951.69
  6. Step 6: Final answer
    x = 20,484.99

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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.