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Finding the Fourth Proportional to 70,814.60, 97,726.94 and 38,986.46

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Solution

The fourth proportional to 70,814.60, 97,726.94 and 38,986.46 is: 53,802.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,814.60 : 97,726.94 = 38,986.46 : x
  2. Step 2: Convert to fraction form
    70,814.60/97,726.94 = 38,986.46/x
  3. Step 3: Cross multiply
    70,814.60x = 97,726.94 × 38,986.46
  4. Step 4: Simplify right side
    70,814.60x = 3,810,027,242.30
  5. Step 5: Solve for x
    x = 3,810,027,242.30/70,814.60
  6. Step 6: Final answer
    x = 53,802.85

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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.