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Finding the Fourth Proportional to 91,050.42, 136,660.94 and 56,058.42

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Solution

The fourth proportional to 91,050.42, 136,660.94 and 56,058.42 is: 84,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,050.42 : 136,660.94 = 56,058.42 : x
  2. Step 2: Convert to fraction form
    91,050.42/136,660.94 = 56,058.42/x
  3. Step 3: Cross multiply
    91,050.42x = 136,660.94 × 56,058.42
  4. Step 4: Simplify right side
    91,050.42x = 7,660,996,372.11
  5. Step 5: Solve for x
    x = 7,660,996,372.11/91,050.42
  6. Step 6: Final answer
    x = 84,140.15

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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.