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Finding the Fourth Proportional to 54,707.45, 75,518.03 and 47,020.30

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Solution

The fourth proportional to 54,707.45, 75,518.03 and 47,020.30 is: 64,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,707.45 : 75,518.03 = 47,020.30 : x
  2. Step 2: Convert to fraction form
    54,707.45/75,518.03 = 47,020.30/x
  3. Step 3: Cross multiply
    54,707.45x = 75,518.03 × 47,020.30
  4. Step 4: Simplify right side
    54,707.45x = 3,550,880,434.91
  5. Step 5: Solve for x
    x = 3,550,880,434.91/54,707.45
  6. Step 6: Final answer
    x = 64,906.70

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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.