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Finding the Fourth Proportional to 92,718.30, 139,081.29 and 46,008.54

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Solution

The fourth proportional to 92,718.30, 139,081.29 and 46,008.54 is: 69,014.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,718.30 : 139,081.29 = 46,008.54 : x
  2. Step 2: Convert to fraction form
    92,718.30/139,081.29 = 46,008.54/x
  3. Step 3: Cross multiply
    92,718.30x = 139,081.29 × 46,008.54
  4. Step 4: Simplify right side
    92,718.30x = 6,398,927,094.22
  5. Step 5: Solve for x
    x = 6,398,927,094.22/92,718.30
  6. Step 6: Final answer
    x = 69,014.72

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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.