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Finding the Fourth Proportional to 77,281.22, 115,931.54 and 27,349.58

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Solution

The fourth proportional to 77,281.22, 115,931.54 and 27,349.58 is: 41,027.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,281.22 : 115,931.54 = 27,349.58 : x
  2. Step 2: Convert to fraction form
    77,281.22/115,931.54 = 27,349.58/x
  3. Step 3: Cross multiply
    77,281.22x = 115,931.54 × 27,349.58
  4. Step 4: Simplify right side
    77,281.22x = 3,170,678,416.47
  5. Step 5: Solve for x
    x = 3,170,678,416.47/77,281.22
  6. Step 6: Final answer
    x = 41,027.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.