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Finding the Fourth Proportional to 75,061.48, 103,465.74 and 59,120.68

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Solution

The fourth proportional to 75,061.48, 103,465.74 and 59,120.68 is: 81,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,061.48 : 103,465.74 = 59,120.68 : x
  2. Step 2: Convert to fraction form
    75,061.48/103,465.74 = 59,120.68/x
  3. Step 3: Cross multiply
    75,061.48x = 103,465.74 × 59,120.68
  4. Step 4: Simplify right side
    75,061.48x = 6,116,964,905.50
  5. Step 5: Solve for x
    x = 6,116,964,905.50/75,061.48
  6. Step 6: Final answer
    x = 81,492.73

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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.