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Finding the Fourth Proportional to 186,401.80, 279,602.70 and 53,286.40

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Solution

The fourth proportional to 186,401.80, 279,602.70 and 53,286.40 is: 79,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,401.80 : 279,602.70 = 53,286.40 : x
  2. Step 2: Convert to fraction form
    186,401.80/279,602.70 = 53,286.40/x
  3. Step 3: Cross multiply
    186,401.80x = 279,602.70 × 53,286.40
  4. Step 4: Simplify right side
    186,401.80x = 14,899,021,313.28
  5. Step 5: Solve for x
    x = 14,899,021,313.28/186,401.80
  6. Step 6: Final answer
    x = 79,929.60

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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.