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Finding the Fourth Proportional to 127,243.76, 190,864.42 and 77,337.64

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Solution

The fourth proportional to 127,243.76, 190,864.42 and 77,337.64 is: 116,005.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,243.76 : 190,864.42 = 77,337.64 : x
  2. Step 2: Convert to fraction form
    127,243.76/190,864.42 = 77,337.64/x
  3. Step 3: Cross multiply
    127,243.76x = 190,864.42 × 77,337.64
  4. Step 4: Simplify right side
    127,243.76x = 14,761,003,802.77
  5. Step 5: Solve for x
    x = 14,761,003,802.77/127,243.76
  6. Step 6: Final answer
    x = 116,005.72

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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.