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Finding the Fourth Proportional to 137,309.60, 205,810.80 and 58,410.40

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Solution

The fourth proportional to 137,309.60, 205,810.80 and 58,410.40 is: 87,550.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,309.60 : 205,810.80 = 58,410.40 : x
  2. Step 2: Convert to fraction form
    137,309.60/205,810.80 = 58,410.40/x
  3. Step 3: Cross multiply
    137,309.60x = 205,810.80 × 58,410.40
  4. Step 4: Simplify right side
    137,309.60x = 12,021,491,152.32
  5. Step 5: Solve for x
    x = 12,021,491,152.32/137,309.60
  6. Step 6: Final answer
    x = 87,550.26

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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.