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Finding the Fourth Proportional to 76,575.16, 114,801.54 and 38,603.98

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Solution

The fourth proportional to 76,575.16, 114,801.54 and 38,603.98 is: 57,875.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,575.16 : 114,801.54 = 38,603.98 : x
  2. Step 2: Convert to fraction form
    76,575.16/114,801.54 = 38,603.98/x
  3. Step 3: Cross multiply
    76,575.16x = 114,801.54 × 38,603.98
  4. Step 4: Simplify right side
    76,575.16x = 4,431,796,354.13
  5. Step 5: Solve for x
    x = 4,431,796,354.13/76,575.16
  6. Step 6: Final answer
    x = 57,875.12

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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.