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Finding the Fourth Proportional to 109,510.44, 164,266.98 and 42,981.90

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Solution

The fourth proportional to 109,510.44, 164,266.98 and 42,981.90 is: 64,473.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,510.44 : 164,266.98 = 42,981.90 : x
  2. Step 2: Convert to fraction form
    109,510.44/164,266.98 = 42,981.90/x
  3. Step 3: Cross multiply
    109,510.44x = 164,266.98 × 42,981.90
  4. Step 4: Simplify right side
    109,510.44x = 7,060,506,907.66
  5. Step 5: Solve for x
    x = 7,060,506,907.66/109,510.44
  6. Step 6: Final answer
    x = 64,473.37

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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.