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Finding the Fourth Proportional to 14,831.04, 20,468.64 and 8,459.20

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Solution

The fourth proportional to 14,831.04, 20,468.64 and 8,459.20 is: 11,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,831.04 : 20,468.64 = 8,459.20 : x
  2. Step 2: Convert to fraction form
    14,831.04/20,468.64 = 8,459.20/x
  3. Step 3: Cross multiply
    14,831.04x = 20,468.64 × 8,459.20
  4. Step 4: Simplify right side
    14,831.04x = 173,148,319.49
  5. Step 5: Solve for x
    x = 173,148,319.49/14,831.04
  6. Step 6: Final answer
    x = 11,674.73

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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.