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Finding the Fourth Proportional to 318,521.58, 477,831.54 and 116,134.74

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Solution

The fourth proportional to 318,521.58, 477,831.54 and 116,134.74 is: 174,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,521.58 : 477,831.54 = 116,134.74 : x
  2. Step 2: Convert to fraction form
    318,521.58/477,831.54 = 116,134.74/x
  3. Step 3: Cross multiply
    318,521.58x = 477,831.54 × 116,134.74
  4. Step 4: Simplify right side
    318,521.58x = 55,492,841,661.70
  5. Step 5: Solve for x
    x = 55,492,841,661.70/318,521.58
  6. Step 6: Final answer
    x = 174,220.04

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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.