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Finding the Fourth Proportional to 64,442.95, 96,615.82 and 42,261.91

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Solution

The fourth proportional to 64,442.95, 96,615.82 and 42,261.91 is: 63,360.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,442.95 : 96,615.82 = 42,261.91 : x
  2. Step 2: Convert to fraction form
    64,442.95/96,615.82 = 42,261.91/x
  3. Step 3: Cross multiply
    64,442.95x = 96,615.82 × 42,261.91
  4. Step 4: Simplify right side
    64,442.95x = 4,083,169,089.42
  5. Step 5: Solve for x
    x = 4,083,169,089.42/64,442.95
  6. Step 6: Final answer
    x = 63,360.99

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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.