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Finding the Fourth Proportional to 92,880.86, 128,214.81 and 62,707.04

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Solution

The fourth proportional to 92,880.86, 128,214.81 and 62,707.04 is: 86,562.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,880.86 : 128,214.81 = 62,707.04 : x
  2. Step 2: Convert to fraction form
    92,880.86/128,214.81 = 62,707.04/x
  3. Step 3: Cross multiply
    92,880.86x = 128,214.81 × 62,707.04
  4. Step 4: Simplify right side
    92,880.86x = 8,039,970,578.19
  5. Step 5: Solve for x
    x = 8,039,970,578.19/92,880.86
  6. Step 6: Final answer
    x = 86,562.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.