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Finding the Fourth Proportional to 22,413.71, 30,931.15 and 12,343.08

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Solution

The fourth proportional to 22,413.71, 30,931.15 and 12,343.08 is: 17,033.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,413.71 : 30,931.15 = 12,343.08 : x
  2. Step 2: Convert to fraction form
    22,413.71/30,931.15 = 12,343.08/x
  3. Step 3: Cross multiply
    22,413.71x = 30,931.15 × 12,343.08
  4. Step 4: Simplify right side
    22,413.71x = 381,785,628.08
  5. Step 5: Solve for x
    x = 381,785,628.08/22,413.71
  6. Step 6: Final answer
    x = 17,033.58

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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.