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Finding the Fourth Proportional to 92,860.56, 139,295.70 and 70,708.68

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Solution

The fourth proportional to 92,860.56, 139,295.70 and 70,708.68 is: 106,066.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,860.56 : 139,295.70 = 70,708.68 : x
  2. Step 2: Convert to fraction form
    92,860.56/139,295.70 = 70,708.68/x
  3. Step 3: Cross multiply
    92,860.56x = 139,295.70 × 70,708.68
  4. Step 4: Simplify right side
    92,860.56x = 9,849,415,076.68
  5. Step 5: Solve for x
    x = 9,849,415,076.68/92,860.56
  6. Step 6: Final answer
    x = 106,066.72

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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.