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Finding the Fourth Proportional to 93,272.58, 128,712.41 and 50,830.20

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Solution

The fourth proportional to 93,272.58, 128,712.41 and 50,830.20 is: 70,143.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,272.58 : 128,712.41 = 50,830.20 : x
  2. Step 2: Convert to fraction form
    93,272.58/128,712.41 = 50,830.20/x
  3. Step 3: Cross multiply
    93,272.58x = 128,712.41 × 50,830.20
  4. Step 4: Simplify right side
    93,272.58x = 6,542,477,801.03
  5. Step 5: Solve for x
    x = 6,542,477,801.03/93,272.58
  6. Step 6: Final answer
    x = 70,143.63

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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.