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Finding the Fourth Proportional to 61,260.16, 84,578.16 and 47,807.68

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Solution

The fourth proportional to 61,260.16, 84,578.16 and 47,807.68 is: 66,005.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,260.16 : 84,578.16 = 47,807.68 : x
  2. Step 2: Convert to fraction form
    61,260.16/84,578.16 = 47,807.68/x
  3. Step 3: Cross multiply
    61,260.16x = 84,578.16 × 47,807.68
  4. Step 4: Simplify right side
    61,260.16x = 4,043,485,608.27
  5. Step 5: Solve for x
    x = 4,043,485,608.27/61,260.16
  6. Step 6: Final answer
    x = 66,005.14

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1.5x scale

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.