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Finding the Fourth Proportional to 247,000.55, 340,856.30 and 139,568.27

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Solution

The fourth proportional to 247,000.55, 340,856.30 and 139,568.27 is: 192,601.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,000.55 : 340,856.30 = 139,568.27 : x
  2. Step 2: Convert to fraction form
    247,000.55/340,856.30 = 139,568.27/x
  3. Step 3: Cross multiply
    247,000.55x = 340,856.30 × 139,568.27
  4. Step 4: Simplify right side
    247,000.55x = 47,572,721,707.48
  5. Step 5: Solve for x
    x = 47,572,721,707.48/247,000.55
  6. Step 6: Final answer
    x = 192,601.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.