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Finding the Fourth Proportional to 354,558.70, 531,886.65 and 117,876.70

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Solution

The fourth proportional to 354,558.70, 531,886.65 and 117,876.70 is: 176,831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,558.70 : 531,886.65 = 117,876.70 : x
  2. Step 2: Convert to fraction form
    354,558.70/531,886.65 = 117,876.70/x
  3. Step 3: Cross multiply
    354,558.70x = 531,886.65 × 117,876.70
  4. Step 4: Simplify right side
    354,558.70x = 62,697,043,076.06
  5. Step 5: Solve for x
    x = 62,697,043,076.06/354,558.70
  6. Step 6: Final answer
    x = 176,831.21

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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.