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Finding the Fourth Proportional to 238,881.07, 358,373.45 and 72,664.75

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Solution

The fourth proportional to 238,881.07, 358,373.45 and 72,664.75 is: 109,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,881.07 : 358,373.45 = 72,664.75 : x
  2. Step 2: Convert to fraction form
    238,881.07/358,373.45 = 72,664.75/x
  3. Step 3: Cross multiply
    238,881.07x = 358,373.45 × 72,664.75
  4. Step 4: Simplify right side
    238,881.07x = 26,041,117,150.89
  5. Step 5: Solve for x
    x = 26,041,117,150.89/238,881.07
  6. Step 6: Final answer
    x = 109,012.90

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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.