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Finding the Fourth Proportional to 124,978.60, 187,484.34 and 46,148.20

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Solution

The fourth proportional to 124,978.60, 187,484.34 and 46,148.20 is: 69,228.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,978.60 : 187,484.34 = 46,148.20 : x
  2. Step 2: Convert to fraction form
    124,978.60/187,484.34 = 46,148.20/x
  3. Step 3: Cross multiply
    124,978.60x = 187,484.34 × 46,148.20
  4. Step 4: Simplify right side
    124,978.60x = 8,652,064,819.19
  5. Step 5: Solve for x
    x = 8,652,064,819.19/124,978.60
  6. Step 6: Final answer
    x = 69,228.37

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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.