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Finding the Fourth Proportional to 358,393.79, 537,668.45 and 109,069.31

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Solution

The fourth proportional to 358,393.79, 537,668.45 and 109,069.31 is: 163,627.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,393.79 : 537,668.45 = 109,069.31 : x
  2. Step 2: Convert to fraction form
    358,393.79/537,668.45 = 109,069.31/x
  3. Step 3: Cross multiply
    358,393.79x = 537,668.45 × 109,069.31
  4. Step 4: Simplify right side
    358,393.79x = 58,643,128,058.10
  5. Step 5: Solve for x
    x = 58,643,128,058.10/358,393.79
  6. Step 6: Final answer
    x = 163,627.63

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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.