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Finding the Fourth Proportional to 124,683, 172,063.50 and 68,094.39

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Solution

The fourth proportional to 124,683, 172,063.50 and 68,094.39 is: 93,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,683 : 172,063.50 = 68,094.39 : x
  2. Step 2: Convert to fraction form
    124,683/172,063.50 = 68,094.39/x
  3. Step 3: Cross multiply
    124,683x = 172,063.50 × 68,094.39
  4. Step 4: Simplify right side
    124,683x = 11,716,559,073.77
  5. Step 5: Solve for x
    x = 11,716,559,073.77/124,683
  6. Step 6: Final answer
    x = 93,970.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.