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Finding the Fourth Proportional to 72,946.99, 100,749.88 and 49,032.14

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Solution

The fourth proportional to 72,946.99, 100,749.88 and 49,032.14 is: 67,720.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,946.99 : 100,749.88 = 49,032.14 : x
  2. Step 2: Convert to fraction form
    72,946.99/100,749.88 = 49,032.14/x
  3. Step 3: Cross multiply
    72,946.99x = 100,749.88 × 49,032.14
  4. Step 4: Simplify right side
    72,946.99x = 4,939,982,295.58
  5. Step 5: Solve for x
    x = 4,939,982,295.58/72,946.99
  6. Step 6: Final answer
    x = 67,720.17

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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.