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Finding the Fourth Proportional to 440,538.71, 660,484.80 and 140,846.81

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Solution

The fourth proportional to 440,538.71, 660,484.80 and 140,846.81 is: 211,166.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,538.71 : 660,484.80 = 140,846.81 : x
  2. Step 2: Convert to fraction form
    440,538.71/660,484.80 = 140,846.81/x
  3. Step 3: Cross multiply
    440,538.71x = 660,484.80 × 140,846.81
  4. Step 4: Simplify right side
    440,538.71x = 93,027,173,831.06
  5. Step 5: Solve for x
    x = 93,027,173,831.06/440,538.71
  6. Step 6: Final answer
    x = 211,166.86

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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.