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Finding the Fourth Proportional to 127,683.01, 191,555.54 and 38,938.09

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Solution

The fourth proportional to 127,683.01, 191,555.54 and 38,938.09 is: 58,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,683.01 : 191,555.54 = 38,938.09 : x
  2. Step 2: Convert to fraction form
    127,683.01/191,555.54 = 38,938.09/x
  3. Step 3: Cross multiply
    127,683.01x = 191,555.54 × 38,938.09
  4. Step 4: Simplify right side
    127,683.01x = 7,458,806,856.52
  5. Step 5: Solve for x
    x = 7,458,806,856.52/127,683.01
  6. Step 6: Final answer
    x = 58,416.60

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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.