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Finding the Fourth Proportional to 92,718.67, 139,102.97 and 47,715.51

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Solution

The fourth proportional to 92,718.67, 139,102.97 and 47,715.51 is: 71,586.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,718.67 : 139,102.97 = 47,715.51 : x
  2. Step 2: Convert to fraction form
    92,718.67/139,102.97 = 47,715.51/x
  3. Step 3: Cross multiply
    92,718.67x = 139,102.97 × 47,715.51
  4. Step 4: Simplify right side
    92,718.67x = 6,637,369,156.06
  5. Step 5: Solve for x
    x = 6,637,369,156.06/92,718.67
  6. Step 6: Final answer
    x = 71,586.11

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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.