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Finding the Fourth Proportional to 88,708, 122,417.20 and 48,964

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Solution

The fourth proportional to 88,708, 122,417.20 and 48,964 is: 67,570.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,708 : 122,417.20 = 48,964 : x
  2. Step 2: Convert to fraction form
    88,708/122,417.20 = 48,964/x
  3. Step 3: Cross multiply
    88,708x = 122,417.20 × 48,964
  4. Step 4: Simplify right side
    88,708x = 5,994,035,780.80
  5. Step 5: Solve for x
    x = 5,994,035,780.80/88,708
  6. Step 6: Final answer
    x = 67,570.41

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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.