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Finding the Fourth Proportional to 14,368.81, 19,831.68 and 8,993.74

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Solution

The fourth proportional to 14,368.81, 19,831.68 and 8,993.74 is: 12,413.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,368.81 : 19,831.68 = 8,993.74 : x
  2. Step 2: Convert to fraction form
    14,368.81/19,831.68 = 8,993.74/x
  3. Step 3: Cross multiply
    14,368.81x = 19,831.68 × 8,993.74
  4. Step 4: Simplify right side
    14,368.81x = 178,360,973.68
  5. Step 5: Solve for x
    x = 178,360,973.68/14,368.81
  6. Step 6: Final answer
    x = 12,413.07

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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.