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Finding the Fourth Proportional to 658,139.40, 987,209.10 and 184,840.20

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Solution

The fourth proportional to 658,139.40, 987,209.10 and 184,840.20 is: 277,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,139.40 : 987,209.10 = 184,840.20 : x
  2. Step 2: Convert to fraction form
    658,139.40/987,209.10 = 184,840.20/x
  3. Step 3: Cross multiply
    658,139.40x = 987,209.10 × 184,840.20
  4. Step 4: Simplify right side
    658,139.40x = 182,475,927,485.82
  5. Step 5: Solve for x
    x = 182,475,927,485.82/658,139.40
  6. Step 6: Final answer
    x = 277,260.30

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Double scale
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Similar ratio
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1.5x scale

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.