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Finding the Fourth Proportional to 186,893.70, 280,340.55 and 140,237.70

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Solution

The fourth proportional to 186,893.70, 280,340.55 and 140,237.70 is: 210,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,893.70 : 280,340.55 = 140,237.70 : x
  2. Step 2: Convert to fraction form
    186,893.70/280,340.55 = 140,237.70/x
  3. Step 3: Cross multiply
    186,893.70x = 280,340.55 × 140,237.70
  4. Step 4: Simplify right side
    186,893.70x = 39,314,313,948.74
  5. Step 5: Solve for x
    x = 39,314,313,948.74/186,893.70
  6. Step 6: Final answer
    x = 210,356.55

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1.5x scale

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.