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Finding the Fourth Proportional to 282,359.40, 389,676.42 and 186,700.20

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Solution

The fourth proportional to 282,359.40, 389,676.42 and 186,700.20 is: 257,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,359.40 : 389,676.42 = 186,700.20 : x
  2. Step 2: Convert to fraction form
    282,359.40/389,676.42 = 186,700.20/x
  3. Step 3: Cross multiply
    282,359.40x = 389,676.42 × 186,700.20
  4. Step 4: Simplify right side
    282,359.40x = 72,752,665,549.28
  5. Step 5: Solve for x
    x = 72,752,665,549.28/282,359.40
  6. Step 6: Final answer
    x = 257,659.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.