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Finding the Fourth Proportional to 102,363.48, 153,626.22 and 43,239.96

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Solution

The fourth proportional to 102,363.48, 153,626.22 and 43,239.96 is: 64,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,363.48 : 153,626.22 = 43,239.96 : x
  2. Step 2: Convert to fraction form
    102,363.48/153,626.22 = 43,239.96/x
  3. Step 3: Cross multiply
    102,363.48x = 153,626.22 × 43,239.96
  4. Step 4: Simplify right side
    102,363.48x = 6,642,791,607.75
  5. Step 5: Solve for x
    x = 6,642,791,607.75/102,363.48
  6. Step 6: Final answer
    x = 64,894.16

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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.