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Finding the Fourth Proportional to 70,486.42, 97,275.69 and 38,655.33

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Solution

The fourth proportional to 70,486.42, 97,275.69 and 38,655.33 is: 53,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,486.42 : 97,275.69 = 38,655.33 : x
  2. Step 2: Convert to fraction form
    70,486.42/97,275.69 = 38,655.33/x
  3. Step 3: Cross multiply
    70,486.42x = 97,275.69 × 38,655.33
  4. Step 4: Simplify right side
    70,486.42x = 3,760,223,897.93
  5. Step 5: Solve for x
    x = 3,760,223,897.93/70,486.42
  6. Step 6: Final answer
    x = 53,346.79

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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.