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Finding the Fourth Proportional to 66,656.70, 99,985.14 and 26,693.67

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Solution

The fourth proportional to 66,656.70, 99,985.14 and 26,693.67 is: 40,040.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,656.70 : 99,985.14 = 26,693.67 : x
  2. Step 2: Convert to fraction form
    66,656.70/99,985.14 = 26,693.67/x
  3. Step 3: Cross multiply
    66,656.70x = 99,985.14 × 26,693.67
  4. Step 4: Simplify right side
    66,656.70x = 2,668,970,332.06
  5. Step 5: Solve for x
    x = 2,668,970,332.06/66,656.70
  6. Step 6: Final answer
    x = 40,040.54

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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.