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Finding the Fourth Proportional to 74,607.66, 102,948.03 and 42,777.90

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Solution

The fourth proportional to 74,607.66, 102,948.03 and 42,777.90 is: 59,027.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,607.66 : 102,948.03 = 42,777.90 : x
  2. Step 2: Convert to fraction form
    74,607.66/102,948.03 = 42,777.90/x
  3. Step 3: Cross multiply
    74,607.66x = 102,948.03 × 42,777.90
  4. Step 4: Simplify right side
    74,607.66x = 4,403,900,532.54
  5. Step 5: Solve for x
    x = 4,403,900,532.54/74,607.66
  6. Step 6: Final answer
    x = 59,027.46

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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.