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Finding the Fourth Proportional to 93,191.45, 128,606.25 and 50,749.99

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Solution

The fourth proportional to 93,191.45, 128,606.25 and 50,749.99 is: 70,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,191.45 : 128,606.25 = 50,749.99 : x
  2. Step 2: Convert to fraction form
    93,191.45/128,606.25 = 50,749.99/x
  3. Step 3: Cross multiply
    93,191.45x = 128,606.25 × 50,749.99
  4. Step 4: Simplify right side
    93,191.45x = 6,526,765,901.44
  5. Step 5: Solve for x
    x = 6,526,765,901.44/93,191.45
  6. Step 6: Final answer
    x = 70,036.10

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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.