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Finding the Fourth Proportional to 64,792.80, 97,079.85 and 31,441.05

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Solution

The fourth proportional to 64,792.80, 97,079.85 and 31,441.05 is: 47,108.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,792.80 : 97,079.85 = 31,441.05 : x
  2. Step 2: Convert to fraction form
    64,792.80/97,079.85 = 31,441.05/x
  3. Step 3: Cross multiply
    64,792.80x = 97,079.85 × 31,441.05
  4. Step 4: Simplify right side
    64,792.80x = 3,052,292,417.84
  5. Step 5: Solve for x
    x = 3,052,292,417.84/64,792.80
  6. Step 6: Final answer
    x = 47,108.51

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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.