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Finding the Fourth Proportional to 247,321.50, 341,303.70 and 139,889.22

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Solution

The fourth proportional to 247,321.50, 341,303.70 and 139,889.22 is: 193,047.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,321.50 : 341,303.70 = 139,889.22 : x
  2. Step 2: Convert to fraction form
    247,321.50/341,303.70 = 139,889.22/x
  3. Step 3: Cross multiply
    247,321.50x = 341,303.70 × 139,889.22
  4. Step 4: Simplify right side
    247,321.50x = 47,744,708,376.11
  5. Step 5: Solve for x
    x = 47,744,708,376.11/247,321.50
  6. Step 6: Final answer
    x = 193,047.14

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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.