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Finding the Fourth Proportional to 70,462.78, 97,243.55 and 38,633.74

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Solution

The fourth proportional to 70,462.78, 97,243.55 and 38,633.74 is: 53,317.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,462.78 : 97,243.55 = 38,633.74 : x
  2. Step 2: Convert to fraction form
    70,462.78/97,243.55 = 38,633.74/x
  3. Step 3: Cross multiply
    70,462.78x = 97,243.55 × 38,633.74
  4. Step 4: Simplify right side
    70,462.78x = 3,756,881,347.99
  5. Step 5: Solve for x
    x = 3,756,881,347.99/70,462.78
  6. Step 6: Final answer
    x = 53,317.25

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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.