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Finding the Fourth Proportional to 89,090.45, 122,915.90 and 60,746.93

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Solution

The fourth proportional to 89,090.45, 122,915.90 and 60,746.93 is: 83,811.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,090.45 : 122,915.90 = 60,746.93 : x
  2. Step 2: Convert to fraction form
    89,090.45/122,915.90 = 60,746.93/x
  3. Step 3: Cross multiply
    89,090.45x = 122,915.90 × 60,746.93
  4. Step 4: Simplify right side
    89,090.45x = 7,466,763,573.19
  5. Step 5: Solve for x
    x = 7,466,763,573.19/89,090.45
  6. Step 6: Final answer
    x = 83,811.04

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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.