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Finding the Fourth Proportional to 127,245.40, 190,868.10 and 44,139.40

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Solution

The fourth proportional to 127,245.40, 190,868.10 and 44,139.40 is: 66,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,245.40 : 190,868.10 = 44,139.40 : x
  2. Step 2: Convert to fraction form
    127,245.40/190,868.10 = 44,139.40/x
  3. Step 3: Cross multiply
    127,245.40x = 190,868.10 × 44,139.40
  4. Step 4: Simplify right side
    127,245.40x = 8,424,803,413.14
  5. Step 5: Solve for x
    x = 8,424,803,413.14/127,245.40
  6. Step 6: Final answer
    x = 66,209.10

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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.