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Finding the Fourth Proportional to 122,988.51, 184,482.90 and 34,242.21

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Solution

The fourth proportional to 122,988.51, 184,482.90 and 34,242.21 is: 51,363.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,988.51 : 184,482.90 = 34,242.21 : x
  2. Step 2: Convert to fraction form
    122,988.51/184,482.90 = 34,242.21/x
  3. Step 3: Cross multiply
    122,988.51x = 184,482.90 × 34,242.21
  4. Step 4: Simplify right side
    122,988.51x = 6,317,102,203.21
  5. Step 5: Solve for x
    x = 6,317,102,203.21/122,988.51
  6. Step 6: Final answer
    x = 51,363.35

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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.