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Finding the Fourth Proportional to 163,615.80, 245,423.70 and 92,465.40

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Solution

The fourth proportional to 163,615.80, 245,423.70 and 92,465.40 is: 138,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,615.80 : 245,423.70 = 92,465.40 : x
  2. Step 2: Convert to fraction form
    163,615.80/245,423.70 = 92,465.40/x
  3. Step 3: Cross multiply
    163,615.80x = 245,423.70 × 92,465.40
  4. Step 4: Simplify right side
    163,615.80x = 22,693,200,589.98
  5. Step 5: Solve for x
    x = 22,693,200,589.98/163,615.80
  6. Step 6: Final answer
    x = 138,698.10

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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.