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Finding the Fourth Proportional to 48,124.40, 72,090.60 and 42,351.60

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Solution

The fourth proportional to 48,124.40, 72,090.60 and 42,351.60 is: 63,442.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,124.40 : 72,090.60 = 42,351.60 : x
  2. Step 2: Convert to fraction form
    48,124.40/72,090.60 = 42,351.60/x
  3. Step 3: Cross multiply
    48,124.40x = 72,090.60 × 42,351.60
  4. Step 4: Simplify right side
    48,124.40x = 3,053,152,254.96
  5. Step 5: Solve for x
    x = 3,053,152,254.96/48,124.40
  6. Step 6: Final answer
    x = 63,442.92

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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.