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Finding the Fourth Proportional to 91,953.95, 137,712.94 and 58,572.81

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Solution

The fourth proportional to 91,953.95, 137,712.94 and 58,572.81 is: 87,720.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,953.95 : 137,712.94 = 58,572.81 : x
  2. Step 2: Convert to fraction form
    91,953.95/137,712.94 = 58,572.81/x
  3. Step 3: Cross multiply
    91,953.95x = 137,712.94 × 58,572.81
  4. Step 4: Simplify right side
    91,953.95x = 8,066,233,869.16
  5. Step 5: Solve for x
    x = 8,066,233,869.16/91,953.95
  6. Step 6: Final answer
    x = 87,720.36

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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.