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Finding the Fourth Proportional to 186,875.70, 280,313.55 and 171,129.30

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Solution

The fourth proportional to 186,875.70, 280,313.55 and 171,129.30 is: 256,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,875.70 : 280,313.55 = 171,129.30 : x
  2. Step 2: Convert to fraction form
    186,875.70/280,313.55 = 171,129.30/x
  3. Step 3: Cross multiply
    186,875.70x = 280,313.55 × 171,129.30
  4. Step 4: Simplify right side
    186,875.70x = 47,969,861,592.02
  5. Step 5: Solve for x
    x = 47,969,861,592.02/186,875.70
  6. Step 6: Final answer
    x = 256,693.95

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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.