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Finding the Fourth Proportional to 125,762.36, 173,541.69 and 74,071.40

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Solution

The fourth proportional to 125,762.36, 173,541.69 and 74,071.40 is: 102,212.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,762.36 : 173,541.69 = 74,071.40 : x
  2. Step 2: Convert to fraction form
    125,762.36/173,541.69 = 74,071.40/x
  3. Step 3: Cross multiply
    125,762.36x = 173,541.69 × 74,071.40
  4. Step 4: Simplify right side
    125,762.36x = 12,854,475,068.96
  5. Step 5: Solve for x
    x = 12,854,475,068.96/125,762.36
  6. Step 6: Final answer
    x = 102,212.42

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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.