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Finding the Fourth Proportional to 282,358.40, 389,675.04 and 186,699.20

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Solution

The fourth proportional to 282,358.40, 389,675.04 and 186,699.20 is: 257,658.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,358.40 : 389,675.04 = 186,699.20 : x
  2. Step 2: Convert to fraction form
    282,358.40/389,675.04 = 186,699.20/x
  3. Step 3: Cross multiply
    282,358.40x = 389,675.04 × 186,699.20
  4. Step 4: Simplify right side
    282,358.40x = 72,752,018,227.97
  5. Step 5: Solve for x
    x = 72,752,018,227.97/282,358.40
  6. Step 6: Final answer
    x = 257,658.42

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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.