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Finding the Fourth Proportional to 318,831.17, 478,293.73 and 169,033.01

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Solution

The fourth proportional to 318,831.17, 478,293.73 and 169,033.01 is: 253,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,831.17 : 478,293.73 = 169,033.01 : x
  2. Step 2: Convert to fraction form
    318,831.17/478,293.73 = 169,033.01/x
  3. Step 3: Cross multiply
    318,831.17x = 478,293.73 × 169,033.01
  4. Step 4: Simplify right side
    318,831.17x = 80,847,426,031.98
  5. Step 5: Solve for x
    x = 80,847,426,031.98/318,831.17
  6. Step 6: Final answer
    x = 253,574.41

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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.