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Finding the Fourth Proportional to 73,887.70, 110,831.55 and 42,706.90

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Solution

The fourth proportional to 73,887.70, 110,831.55 and 42,706.90 is: 64,060.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,887.70 : 110,831.55 = 42,706.90 : x
  2. Step 2: Convert to fraction form
    73,887.70/110,831.55 = 42,706.90/x
  3. Step 3: Cross multiply
    73,887.70x = 110,831.55 × 42,706.90
  4. Step 4: Simplify right side
    73,887.70x = 4,733,271,922.70
  5. Step 5: Solve for x
    x = 4,733,271,922.70/73,887.70
  6. Step 6: Final answer
    x = 64,060.35

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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.