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Finding the Fourth Proportional to 124,486.36, 171,790.35 and 70,771.39

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Solution

The fourth proportional to 124,486.36, 171,790.35 and 70,771.39 is: 97,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,486.36 : 171,790.35 = 70,771.39 : x
  2. Step 2: Convert to fraction form
    124,486.36/171,790.35 = 70,771.39/x
  3. Step 3: Cross multiply
    124,486.36x = 171,790.35 × 70,771.39
  4. Step 4: Simplify right side
    124,486.36x = 12,157,840,999.13
  5. Step 5: Solve for x
    x = 12,157,840,999.13/124,486.36
  6. Step 6: Final answer
    x = 97,664.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.