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Finding the Fourth Proportional to 70,534, 96,632.66 and 67,877.20

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Solution

The fourth proportional to 70,534, 96,632.66 and 67,877.20 is: 92,992.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,534 : 96,632.66 = 67,877.20 : x
  2. Step 2: Convert to fraction form
    70,534/96,632.66 = 67,877.20/x
  3. Step 3: Cross multiply
    70,534x = 96,632.66 × 67,877.20
  4. Step 4: Simplify right side
    70,534x = 6,559,154,389.35
  5. Step 5: Solve for x
    x = 6,559,154,389.35/70,534
  6. Step 6: Final answer
    x = 92,992.80

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.