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Finding the Fourth Proportional to 73,931.40, 110,702.70 and 54,102.60

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Solution

The fourth proportional to 73,931.40, 110,702.70 and 54,102.60 is: 81,011.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,931.40 : 110,702.70 = 54,102.60 : x
  2. Step 2: Convert to fraction form
    73,931.40/110,702.70 = 54,102.60/x
  3. Step 3: Cross multiply
    73,931.40x = 110,702.70 × 54,102.60
  4. Step 4: Simplify right side
    73,931.40x = 5,989,303,897.02
  5. Step 5: Solve for x
    x = 5,989,303,897.02/73,931.40
  6. Step 6: Final answer
    x = 81,011.64

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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.