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Finding the Fourth Proportional to 16,831.70, 23,518.30 and 16,831.70

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Solution

The fourth proportional to 16,831.70, 23,518.30 and 16,831.70 is: 23,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,831.70 : 23,518.30 = 16,831.70 : x
  2. Step 2: Convert to fraction form
    16,831.70/23,518.30 = 16,831.70/x
  3. Step 3: Cross multiply
    16,831.70x = 23,518.30 × 16,831.70
  4. Step 4: Simplify right side
    16,831.70x = 395,852,970.11
  5. Step 5: Solve for x
    x = 395,852,970.11/16,831.70
  6. Step 6: Final answer
    x = 23,518.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.