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Finding the Fourth Proportional to 13,092.74, 18,068.06 and 7,124.41

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Solution

The fourth proportional to 13,092.74, 18,068.06 and 7,124.41 is: 9,831.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,092.74 : 18,068.06 = 7,124.41 : x
  2. Step 2: Convert to fraction form
    13,092.74/18,068.06 = 7,124.41/x
  3. Step 3: Cross multiply
    13,092.74x = 18,068.06 × 7,124.41
  4. Step 4: Simplify right side
    13,092.74x = 128,724,206.11
  5. Step 5: Solve for x
    x = 128,724,206.11/13,092.74
  6. Step 6: Final answer
    x = 9,831.72

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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.