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Finding the Fourth Proportional to 70,719.49, 97,592.07 and 38,886.49

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Solution

The fourth proportional to 70,719.49, 97,592.07 and 38,886.49 is: 53,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,719.49 : 97,592.07 = 38,886.49 : x
  2. Step 2: Convert to fraction form
    70,719.49/97,592.07 = 38,886.49/x
  3. Step 3: Cross multiply
    70,719.49x = 97,592.07 × 38,886.49
  4. Step 4: Simplify right side
    70,719.49x = 3,795,013,054.13
  5. Step 5: Solve for x
    x = 3,795,013,054.13/70,719.49
  6. Step 6: Final answer
    x = 53,662.90

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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.