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Finding the Fourth Proportional to 127,339.36, 190,746.54 and 74,588.92

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Solution

The fourth proportional to 127,339.36, 190,746.54 and 74,588.92 is: 111,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,339.36 : 190,746.54 = 74,588.92 : x
  2. Step 2: Convert to fraction form
    127,339.36/190,746.54 = 74,588.92/x
  3. Step 3: Cross multiply
    127,339.36x = 190,746.54 × 74,588.92
  4. Step 4: Simplify right side
    127,339.36x = 14,227,578,412.34
  5. Step 5: Solve for x
    x = 14,227,578,412.34/127,339.36
  6. Step 6: Final answer
    x = 111,729.62

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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.