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Finding the Fourth Proportional to 210,896.60, 316,411.34 and 92,667.40

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Solution

The fourth proportional to 210,896.60, 316,411.34 and 92,667.40 is: 139,030.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,896.60 : 316,411.34 = 92,667.40 : x
  2. Step 2: Convert to fraction form
    210,896.60/316,411.34 = 92,667.40/x
  3. Step 3: Cross multiply
    210,896.60x = 316,411.34 × 92,667.40
  4. Step 4: Simplify right side
    210,896.60x = 29,321,016,208.32
  5. Step 5: Solve for x
    x = 29,321,016,208.32/210,896.60
  6. Step 6: Final answer
    x = 139,030.29

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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.