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Finding the Fourth Proportional to 70,840.68, 97,759.99 and 38,574.80

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Solution

The fourth proportional to 70,840.68, 97,759.99 and 38,574.80 is: 53,233.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,840.68 : 97,759.99 = 38,574.80 : x
  2. Step 2: Convert to fraction form
    70,840.68/97,759.99 = 38,574.80/x
  3. Step 3: Cross multiply
    70,840.68x = 97,759.99 × 38,574.80
  4. Step 4: Simplify right side
    70,840.68x = 3,771,072,062.25
  5. Step 5: Solve for x
    x = 3,771,072,062.25/70,840.68
  6. Step 6: Final answer
    x = 53,233.14

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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.