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Finding the Fourth Proportional to 115,792.40, 173,688.60 and 56,743.40

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Solution

The fourth proportional to 115,792.40, 173,688.60 and 56,743.40 is: 85,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,792.40 : 173,688.60 = 56,743.40 : x
  2. Step 2: Convert to fraction form
    115,792.40/173,688.60 = 56,743.40/x
  3. Step 3: Cross multiply
    115,792.40x = 173,688.60 × 56,743.40
  4. Step 4: Simplify right side
    115,792.40x = 9,855,681,705.24
  5. Step 5: Solve for x
    x = 9,855,681,705.24/115,792.40
  6. Step 6: Final answer
    x = 85,115.10

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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.