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Finding the Fourth Proportional to 92,775.48, 139,055.64 and 42,750.48

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Solution

The fourth proportional to 92,775.48, 139,055.64 and 42,750.48 is: 64,076.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,775.48 : 139,055.64 = 42,750.48 : x
  2. Step 2: Convert to fraction form
    92,775.48/139,055.64 = 42,750.48/x
  3. Step 3: Cross multiply
    92,775.48x = 139,055.64 × 42,750.48
  4. Step 4: Simplify right side
    92,775.48x = 5,944,695,717.85
  5. Step 5: Solve for x
    x = 5,944,695,717.85/92,775.48
  6. Step 6: Final answer
    x = 64,076.15

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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.