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Finding the Fourth Proportional to 88,492.96, 122,239.68 and 70,712.64

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Solution

The fourth proportional to 88,492.96, 122,239.68 and 70,712.64 is: 97,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,492.96 : 122,239.68 = 70,712.64 : x
  2. Step 2: Convert to fraction form
    88,492.96/122,239.68 = 70,712.64/x
  3. Step 3: Cross multiply
    88,492.96x = 122,239.68 × 70,712.64
  4. Step 4: Simplify right side
    88,492.96x = 8,643,890,485.56
  5. Step 5: Solve for x
    x = 8,643,890,485.56/88,492.96
  6. Step 6: Final answer
    x = 97,678.85

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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.