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Finding the Fourth Proportional to 77,878.53, 116,446.01 and 60,090.93

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Solution

The fourth proportional to 77,878.53, 116,446.01 and 60,090.93 is: 89,849.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,878.53 : 116,446.01 = 60,090.93 : x
  2. Step 2: Convert to fraction form
    77,878.53/116,446.01 = 60,090.93/x
  3. Step 3: Cross multiply
    77,878.53x = 116,446.01 × 60,090.93
  4. Step 4: Simplify right side
    77,878.53x = 6,997,348,735.23
  5. Step 5: Solve for x
    x = 6,997,348,735.23/77,878.53
  6. Step 6: Final answer
    x = 89,849.52

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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.