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Finding the Fourth Proportional to 93,062.42, 128,415.70 and 54,819.47

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Solution

The fourth proportional to 93,062.42, 128,415.70 and 54,819.47 is: 75,644.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,062.42 : 128,415.70 = 54,819.47 : x
  2. Step 2: Convert to fraction form
    93,062.42/128,415.70 = 54,819.47/x
  3. Step 3: Cross multiply
    93,062.42x = 128,415.70 × 54,819.47
  4. Step 4: Simplify right side
    93,062.42x = 7,039,681,003.24
  5. Step 5: Solve for x
    x = 7,039,681,003.24/93,062.42
  6. Step 6: Final answer
    x = 75,644.72

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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.