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Finding the Fourth Proportional to 92,710.20, 139,065.30 and 92,710.20

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Solution

The fourth proportional to 92,710.20, 139,065.30 and 92,710.20 is: 139,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,710.20 : 139,065.30 = 92,710.20 : x
  2. Step 2: Convert to fraction form
    92,710.20/139,065.30 = 92,710.20/x
  3. Step 3: Cross multiply
    92,710.20x = 139,065.30 × 92,710.20
  4. Step 4: Simplify right side
    92,710.20x = 12,892,771,776.06
  5. Step 5: Solve for x
    x = 12,892,771,776.06/92,710.20
  6. Step 6: Final answer
    x = 139,065.30

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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.