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Finding the Fourth Proportional to 127,243.51, 190,864.05 and 77,337.39

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Solution

The fourth proportional to 127,243.51, 190,864.05 and 77,337.39 is: 116,005.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,243.51 : 190,864.05 = 77,337.39 : x
  2. Step 2: Convert to fraction form
    127,243.51/190,864.05 = 77,337.39/x
  3. Step 3: Cross multiply
    127,243.51x = 190,864.05 × 77,337.39
  4. Step 4: Simplify right side
    127,243.51x = 14,760,927,471.83
  5. Step 5: Solve for x
    x = 14,760,927,471.83/127,243.51
  6. Step 6: Final answer
    x = 116,005.35

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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.