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Finding the Fourth Proportional to 206,886.30, 310,329.45 and 73,916.70

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Solution

The fourth proportional to 206,886.30, 310,329.45 and 73,916.70 is: 110,875.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,886.30 : 310,329.45 = 73,916.70 : x
  2. Step 2: Convert to fraction form
    206,886.30/310,329.45 = 73,916.70/x
  3. Step 3: Cross multiply
    206,886.30x = 310,329.45 × 73,916.70
  4. Step 4: Simplify right side
    206,886.30x = 22,938,528,856.82
  5. Step 5: Solve for x
    x = 22,938,528,856.82/206,886.30
  6. Step 6: Final answer
    x = 110,875.05

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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.