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Finding the Fourth Proportional to 157,645.48, 217,535.94 and 93,970.60

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Solution

The fourth proportional to 157,645.48, 217,535.94 and 93,970.60 is: 129,670.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,645.48 : 217,535.94 = 93,970.60 : x
  2. Step 2: Convert to fraction form
    157,645.48/217,535.94 = 93,970.60/x
  3. Step 3: Cross multiply
    157,645.48x = 217,535.94 × 93,970.60
  4. Step 4: Simplify right side
    157,645.48x = 20,441,982,803.36
  5. Step 5: Solve for x
    x = 20,441,982,803.36/157,645.48
  6. Step 6: Final answer
    x = 129,670.59

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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.