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Finding the Fourth Proportional to 125,369.22, 173,009.50 and 70,920.22

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Solution

The fourth proportional to 125,369.22, 173,009.50 and 70,920.22 is: 97,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,369.22 : 173,009.50 = 70,920.22 : x
  2. Step 2: Convert to fraction form
    125,369.22/173,009.50 = 70,920.22/x
  3. Step 3: Cross multiply
    125,369.22x = 173,009.50 × 70,920.22
  4. Step 4: Simplify right side
    125,369.22x = 12,269,871,802.09
  5. Step 5: Solve for x
    x = 12,269,871,802.09/125,369.22
  6. Step 6: Final answer
    x = 97,869.89

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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.