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Finding the Fourth Proportional to 13,901.74, 20,831.96 and 7,307.93

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Solution

The fourth proportional to 13,901.74, 20,831.96 and 7,307.93 is: 10,951.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.74 : 20,831.96 = 7,307.93 : x
  2. Step 2: Convert to fraction form
    13,901.74/20,831.96 = 7,307.93/x
  3. Step 3: Cross multiply
    13,901.74x = 20,831.96 × 7,307.93
  4. Step 4: Simplify right side
    13,901.74x = 152,238,575.79
  5. Step 5: Solve for x
    x = 152,238,575.79/13,901.74
  6. Step 6: Final answer
    x = 10,951.05

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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.