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Finding the Fourth Proportional to 472,791.55, 709,192.16 and 135,831.35

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Solution

The fourth proportional to 472,791.55, 709,192.16 and 135,831.35 is: 203,748.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,791.55 : 709,192.16 = 135,831.35 : x
  2. Step 2: Convert to fraction form
    472,791.55/709,192.16 = 135,831.35/x
  3. Step 3: Cross multiply
    472,791.55x = 709,192.16 × 135,831.35
  4. Step 4: Simplify right side
    472,791.55x = 96,330,528,502.22
  5. Step 5: Solve for x
    x = 96,330,528,502.22/472,791.55
  6. Step 6: Final answer
    x = 203,748.41

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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.