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Finding the Fourth Proportional to 71,743.10, 98,901.81 and 47,503.49

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Solution

The fourth proportional to 71,743.10, 98,901.81 and 47,503.49 is: 65,486.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,743.10 : 98,901.81 = 47,503.49 : x
  2. Step 2: Convert to fraction form
    71,743.10/98,901.81 = 47,503.49/x
  3. Step 3: Cross multiply
    71,743.10x = 98,901.81 × 47,503.49
  4. Step 4: Simplify right side
    71,743.10x = 4,698,180,647.81
  5. Step 5: Solve for x
    x = 4,698,180,647.81/71,743.10
  6. Step 6: Final answer
    x = 65,486.17

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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.