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Finding the Fourth Proportional to 127,242.01, 190,861.80 and 77,335.89

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Solution

The fourth proportional to 127,242.01, 190,861.80 and 77,335.89 is: 116,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,242.01 : 190,861.80 = 77,335.89 : x
  2. Step 2: Convert to fraction form
    127,242.01/190,861.80 = 77,335.89/x
  3. Step 3: Cross multiply
    127,242.01x = 190,861.80 × 77,335.89
  4. Step 4: Simplify right side
    127,242.01x = 14,760,467,170.00
  5. Step 5: Solve for x
    x = 14,760,467,170.00/127,242.01
  6. Step 6: Final answer
    x = 116,003.10

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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.