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Finding the Fourth Proportional to 72,812.13, 100,483.16 and 44,512.35

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Solution

The fourth proportional to 72,812.13, 100,483.16 and 44,512.35 is: 61,428.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,812.13 : 100,483.16 = 44,512.35 : x
  2. Step 2: Convert to fraction form
    72,812.13/100,483.16 = 44,512.35/x
  3. Step 3: Cross multiply
    72,812.13x = 100,483.16 × 44,512.35
  4. Step 4: Simplify right side
    72,812.13x = 4,472,741,587.03
  5. Step 5: Solve for x
    x = 4,472,741,587.03/72,812.13
  6. Step 6: Final answer
    x = 61,428.52

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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.