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Finding the Fourth Proportional to 77,175.60, 115,536.60 and 57,541.20

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Solution

The fourth proportional to 77,175.60, 115,536.60 and 57,541.20 is: 86,142.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,175.60 : 115,536.60 = 57,541.20 : x
  2. Step 2: Convert to fraction form
    77,175.60/115,536.60 = 57,541.20/x
  3. Step 3: Cross multiply
    77,175.60x = 115,536.60 × 57,541.20
  4. Step 4: Simplify right side
    77,175.60x = 6,648,114,607.92
  5. Step 5: Solve for x
    x = 6,648,114,607.92/77,175.60
  6. Step 6: Final answer
    x = 86,142.70

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1.5x scale

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.