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Finding the Fourth Proportional to 105,607.34, 158,411.33 and 26,721.55

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Solution

The fourth proportional to 105,607.34, 158,411.33 and 26,721.55 is: 40,082.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,607.34 : 158,411.33 = 26,721.55 : x
  2. Step 2: Convert to fraction form
    105,607.34/158,411.33 = 26,721.55/x
  3. Step 3: Cross multiply
    105,607.34x = 158,411.33 × 26,721.55
  4. Step 4: Simplify right side
    105,607.34x = 4,232,996,275.16
  5. Step 5: Solve for x
    x = 4,232,996,275.16/105,607.34
  6. Step 6: Final answer
    x = 40,082.41

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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.