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Finding the Fourth Proportional to 389,112.60, 583,344.90 and 164,645.40

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Solution

The fourth proportional to 389,112.60, 583,344.90 and 164,645.40 is: 246,831.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,112.60 : 583,344.90 = 164,645.40 : x
  2. Step 2: Convert to fraction form
    389,112.60/583,344.90 = 164,645.40/x
  3. Step 3: Cross multiply
    389,112.60x = 583,344.90 × 164,645.40
  4. Step 4: Simplify right side
    389,112.60x = 96,045,054,398.46
  5. Step 5: Solve for x
    x = 96,045,054,398.46/389,112.60
  6. Step 6: Final answer
    x = 246,831.01

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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.