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Finding the Fourth Proportional to 65,388.70, 97,823.85 and 56,719.90

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Solution

The fourth proportional to 65,388.70, 97,823.85 and 56,719.90 is: 84,855.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,388.70 : 97,823.85 = 56,719.90 : x
  2. Step 2: Convert to fraction form
    65,388.70/97,823.85 = 56,719.90/x
  3. Step 3: Cross multiply
    65,388.70x = 97,823.85 × 56,719.90
  4. Step 4: Simplify right side
    65,388.70x = 5,548,558,989.62
  5. Step 5: Solve for x
    x = 5,548,558,989.62/65,388.70
  6. Step 6: Final answer
    x = 84,855.01

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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.