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Finding the Fourth Proportional to 65,368, 98,068.36 and 18,620.88

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Solution

The fourth proportional to 65,368, 98,068.36 and 18,620.88 is: 27,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,368 : 98,068.36 = 18,620.88 : x
  2. Step 2: Convert to fraction form
    65,368/98,068.36 = 18,620.88/x
  3. Step 3: Cross multiply
    65,368x = 98,068.36 × 18,620.88
  4. Step 4: Simplify right side
    65,368x = 1,826,119,163.36
  5. Step 5: Solve for x
    x = 1,826,119,163.36/65,368
  6. Step 6: Final answer
    x = 27,935.98

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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.