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Finding the Fourth Proportional to 70,902.77, 97,845.36 and 38,637.32

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Solution

The fourth proportional to 70,902.77, 97,845.36 and 38,637.32 is: 53,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.77 : 97,845.36 = 38,637.32 : x
  2. Step 2: Convert to fraction form
    70,902.77/97,845.36 = 38,637.32/x
  3. Step 3: Cross multiply
    70,902.77x = 97,845.36 × 38,637.32
  4. Step 4: Simplify right side
    70,902.77x = 3,780,481,995.61
  5. Step 5: Solve for x
    x = 3,780,481,995.61/70,902.77
  6. Step 6: Final answer
    x = 53,319.25

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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.