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Finding the Fourth Proportional to 93,338.55, 139,989.60 and 31,009.05

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Solution

The fourth proportional to 93,338.55, 139,989.60 and 31,009.05 is: 46,507.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,338.55 : 139,989.60 = 31,009.05 : x
  2. Step 2: Convert to fraction form
    93,338.55/139,989.60 = 31,009.05/x
  3. Step 3: Cross multiply
    93,338.55x = 139,989.60 × 31,009.05
  4. Step 4: Simplify right side
    93,338.55x = 4,340,944,505.88
  5. Step 5: Solve for x
    x = 4,340,944,505.88/93,338.55
  6. Step 6: Final answer
    x = 46,507.52

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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.