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Finding the Fourth Proportional to 386,431.76, 579,592.24 and 186,698.52

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Solution

The fourth proportional to 386,431.76, 579,592.24 and 186,698.52 is: 280,021.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,431.76 : 579,592.24 = 186,698.52 : x
  2. Step 2: Convert to fraction form
    386,431.76/579,592.24 = 186,698.52/x
  3. Step 3: Cross multiply
    386,431.76x = 579,592.24 × 186,698.52
  4. Step 4: Simplify right side
    386,431.76x = 108,209,009,580.03
  5. Step 5: Solve for x
    x = 108,209,009,580.03/386,431.76
  6. Step 6: Final answer
    x = 280,021.01

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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.