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Finding the Fourth Proportional to 125,887.42, 173,739.43 and 70,705.80

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Solution

The fourth proportional to 125,887.42, 173,739.43 and 70,705.80 is: 97,582.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,887.42 : 173,739.43 = 70,705.80 : x
  2. Step 2: Convert to fraction form
    125,887.42/173,739.43 = 70,705.80/x
  3. Step 3: Cross multiply
    125,887.42x = 173,739.43 × 70,705.80
  4. Step 4: Simplify right side
    125,887.42x = 12,284,385,389.69
  5. Step 5: Solve for x
    x = 12,284,385,389.69/125,887.42
  6. Step 6: Final answer
    x = 97,582.31

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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.