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Finding the Fourth Proportional to 127,586.20, 191,033.70 and 99,938.20

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Solution

The fourth proportional to 127,586.20, 191,033.70 and 99,938.20 is: 149,636.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,586.20 : 191,033.70 = 99,938.20 : x
  2. Step 2: Convert to fraction form
    127,586.20/191,033.70 = 99,938.20/x
  3. Step 3: Cross multiply
    127,586.20x = 191,033.70 × 99,938.20
  4. Step 4: Simplify right side
    127,586.20x = 19,091,564,117.34
  5. Step 5: Solve for x
    x = 19,091,564,117.34/127,586.20
  6. Step 6: Final answer
    x = 149,636.59

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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.