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Finding the Fourth Proportional to 93,218.88, 128,641.86 and 50,777.31

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Solution

The fourth proportional to 93,218.88, 128,641.86 and 50,777.31 is: 70,072.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,218.88 : 128,641.86 = 50,777.31 : x
  2. Step 2: Convert to fraction form
    93,218.88/128,641.86 = 50,777.31/x
  3. Step 3: Cross multiply
    93,218.88x = 128,641.86 × 50,777.31
  4. Step 4: Simplify right side
    93,218.88x = 6,532,087,604.20
  5. Step 5: Solve for x
    x = 6,532,087,604.20/93,218.88
  6. Step 6: Final answer
    x = 70,072.58

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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.