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Finding the Fourth Proportional to 92,689.38, 139,038.93 and 29,516.40

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Solution

The fourth proportional to 92,689.38, 139,038.93 and 29,516.40 is: 44,276.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,689.38 : 139,038.93 = 29,516.40 : x
  2. Step 2: Convert to fraction form
    92,689.38/139,038.93 = 29,516.40/x
  3. Step 3: Cross multiply
    92,689.38x = 139,038.93 × 29,516.40
  4. Step 4: Simplify right side
    92,689.38x = 4,103,928,673.45
  5. Step 5: Solve for x
    x = 4,103,928,673.45/92,689.38
  6. Step 6: Final answer
    x = 44,276.15

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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.