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Finding the Fourth Proportional to 93,031.86, 128,393.51 and 54,803.44

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Solution

The fourth proportional to 93,031.86, 128,393.51 and 54,803.44 is: 75,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,031.86 : 128,393.51 = 54,803.44 : x
  2. Step 2: Convert to fraction form
    93,031.86/128,393.51 = 54,803.44/x
  3. Step 3: Cross multiply
    93,031.86x = 128,393.51 × 54,803.44
  4. Step 4: Simplify right side
    93,031.86x = 7,036,405,185.94
  5. Step 5: Solve for x
    x = 7,036,405,185.94/93,031.86
  6. Step 6: Final answer
    x = 75,634.36

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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.