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Finding the Fourth Proportional to 125,871.93, 188,762.54 and 42,746.49

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Solution

The fourth proportional to 125,871.93, 188,762.54 and 42,746.49 is: 64,104.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,871.93 : 188,762.54 = 42,746.49 : x
  2. Step 2: Convert to fraction form
    125,871.93/188,762.54 = 42,746.49/x
  3. Step 3: Cross multiply
    125,871.93x = 188,762.54 × 42,746.49
  4. Step 4: Simplify right side
    125,871.93x = 8,068,935,814.75
  5. Step 5: Solve for x
    x = 8,068,935,814.75/125,871.93
  6. Step 6: Final answer
    x = 64,104.33

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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.