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Finding the Fourth Proportional to 124,807.80, 187,211.70 and 122,964.60

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Solution

The fourth proportional to 124,807.80, 187,211.70 and 122,964.60 is: 184,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,807.80 : 187,211.70 = 122,964.60 : x
  2. Step 2: Convert to fraction form
    124,807.80/187,211.70 = 122,964.60/x
  3. Step 3: Cross multiply
    124,807.80x = 187,211.70 × 122,964.60
  4. Step 4: Simplify right side
    124,807.80x = 23,020,411,805.82
  5. Step 5: Solve for x
    x = 23,020,411,805.82/124,807.80
  6. Step 6: Final answer
    x = 184,446.90

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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.