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Finding the Fourth Proportional to 247,398, 341,409.33 and 139,965.72

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Solution

The fourth proportional to 247,398, 341,409.33 and 139,965.72 is: 193,152.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,398 : 341,409.33 = 139,965.72 : x
  2. Step 2: Convert to fraction form
    247,398/341,409.33 = 139,965.72/x
  3. Step 3: Cross multiply
    247,398x = 341,409.33 × 139,965.72
  4. Step 4: Simplify right side
    247,398x = 47,785,602,688.17
  5. Step 5: Solve for x
    x = 47,785,602,688.17/247,398
  6. Step 6: Final answer
    x = 193,152.74

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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.