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Finding the Fourth Proportional to 186,238.80, 279,358.20 and 53,123.40

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Solution

The fourth proportional to 186,238.80, 279,358.20 and 53,123.40 is: 79,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,238.80 : 279,358.20 = 53,123.40 : x
  2. Step 2: Convert to fraction form
    186,238.80/279,358.20 = 53,123.40/x
  3. Step 3: Cross multiply
    186,238.80x = 279,358.20 × 53,123.40
  4. Step 4: Simplify right side
    186,238.80x = 14,840,457,401.88
  5. Step 5: Solve for x
    x = 14,840,457,401.88/186,238.80
  6. Step 6: Final answer
    x = 79,685.10

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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.