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Finding the Fourth Proportional to 70,643.88, 97,488.63 and 38,814.66

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Solution

The fourth proportional to 70,643.88, 97,488.63 and 38,814.66 is: 53,564.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,643.88 : 97,488.63 = 38,814.66 : x
  2. Step 2: Convert to fraction form
    70,643.88/97,488.63 = 38,814.66/x
  3. Step 3: Cross multiply
    70,643.88x = 97,488.63 × 38,814.66
  4. Step 4: Simplify right side
    70,643.88x = 3,783,988,027.32
  5. Step 5: Solve for x
    x = 3,783,988,027.32/70,643.88
  6. Step 6: Final answer
    x = 53,564.27

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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.