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Finding the Fourth Proportional to 70,447.63, 97,218.16 and 38,616.43

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Solution

The fourth proportional to 70,447.63, 97,218.16 and 38,616.43 is: 53,290.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,447.63 : 97,218.16 = 38,616.43 : x
  2. Step 2: Convert to fraction form
    70,447.63/97,218.16 = 38,616.43/x
  3. Step 3: Cross multiply
    70,447.63x = 97,218.16 × 38,616.43
  4. Step 4: Simplify right side
    70,447.63x = 3,754,218,077.29
  5. Step 5: Solve for x
    x = 3,754,218,077.29/70,447.63
  6. Step 6: Final answer
    x = 53,290.91

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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.