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Finding the Fourth Proportional to 140,652.91, 210,870.15 and 69,526.54

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Solution

The fourth proportional to 140,652.91, 210,870.15 and 69,526.54 is: 104,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,652.91 : 210,870.15 = 69,526.54 : x
  2. Step 2: Convert to fraction form
    140,652.91/210,870.15 = 69,526.54/x
  3. Step 3: Cross multiply
    140,652.91x = 210,870.15 × 69,526.54
  4. Step 4: Simplify right side
    140,652.91x = 14,661,071,918.78
  5. Step 5: Solve for x
    x = 14,661,071,918.78/140,652.91
  6. Step 6: Final answer
    x = 104,235.82

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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.