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Finding the Fourth Proportional to 92,913.91, 128,260.44 and 62,740.10

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Solution

The fourth proportional to 92,913.91, 128,260.44 and 62,740.10 is: 86,607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,913.91 : 128,260.44 = 62,740.10 : x
  2. Step 2: Convert to fraction form
    92,913.91/128,260.44 = 62,740.10/x
  3. Step 3: Cross multiply
    92,913.91x = 128,260.44 × 62,740.10
  4. Step 4: Simplify right side
    92,913.91x = 8,047,073,152.30
  5. Step 5: Solve for x
    x = 8,047,073,152.30/92,913.91
  6. Step 6: Final answer
    x = 86,607.84

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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.