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Finding the Fourth Proportional to 123,038.60, 184,557.90 and 120,705.80

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Solution

The fourth proportional to 123,038.60, 184,557.90 and 120,705.80 is: 181,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,038.60 : 184,557.90 = 120,705.80 : x
  2. Step 2: Convert to fraction form
    123,038.60/184,557.90 = 120,705.80/x
  3. Step 3: Cross multiply
    123,038.60x = 184,557.90 × 120,705.80
  4. Step 4: Simplify right side
    123,038.60x = 22,277,208,965.82
  5. Step 5: Solve for x
    x = 22,277,208,965.82/123,038.60
  6. Step 6: Final answer
    x = 181,058.70

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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.