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Finding the Fourth Proportional to 115,328.60, 172,992.90 and 62,840.60

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Solution

The fourth proportional to 115,328.60, 172,992.90 and 62,840.60 is: 94,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,328.60 : 172,992.90 = 62,840.60 : x
  2. Step 2: Convert to fraction form
    115,328.60/172,992.90 = 62,840.60/x
  3. Step 3: Cross multiply
    115,328.60x = 172,992.90 × 62,840.60
  4. Step 4: Simplify right side
    115,328.60x = 10,870,977,631.74
  5. Step 5: Solve for x
    x = 10,870,977,631.74/115,328.60
  6. Step 6: Final answer
    x = 94,260.90

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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.