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Finding the Fourth Proportional to 70,908.99, 97,854.01 and 38,643.58

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Solution

The fourth proportional to 70,908.99, 97,854.01 and 38,643.58 is: 53,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,908.99 : 97,854.01 = 38,643.58 : x
  2. Step 2: Convert to fraction form
    70,908.99/97,854.01 = 38,643.58/x
  3. Step 3: Cross multiply
    70,908.99x = 97,854.01 × 38,643.58
  4. Step 4: Simplify right side
    70,908.99x = 3,781,429,263.76
  5. Step 5: Solve for x
    x = 3,781,429,263.76/70,908.99
  6. Step 6: Final answer
    x = 53,327.92

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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.