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Finding the Fourth Proportional to 127,999.70, 191,999.55 and 117,890.90

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Solution

The fourth proportional to 127,999.70, 191,999.55 and 117,890.90 is: 176,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,999.70 : 191,999.55 = 117,890.90 : x
  2. Step 2: Convert to fraction form
    127,999.70/191,999.55 = 117,890.90/x
  3. Step 3: Cross multiply
    127,999.70x = 191,999.55 × 117,890.90
  4. Step 4: Simplify right side
    127,999.70x = 22,634,999,749.10
  5. Step 5: Solve for x
    x = 22,634,999,749.10/127,999.70
  6. Step 6: Final answer
    x = 176,836.35

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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.