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Finding the Fourth Proportional to 77,160.70, 106,485.91 and 43,167.16

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Solution

The fourth proportional to 77,160.70, 106,485.91 and 43,167.16 is: 59,573.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,160.70 : 106,485.91 = 43,167.16 : x
  2. Step 2: Convert to fraction form
    77,160.70/106,485.91 = 43,167.16/x
  3. Step 3: Cross multiply
    77,160.70x = 106,485.91 × 43,167.16
  4. Step 4: Simplify right side
    77,160.70x = 4,596,694,339.91
  5. Step 5: Solve for x
    x = 4,596,694,339.91/77,160.70
  6. Step 6: Final answer
    x = 59,573.00

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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.