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Finding the Fourth Proportional to 362,990.16, 544,543.32 and 126,400.08

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Solution

The fourth proportional to 362,990.16, 544,543.32 and 126,400.08 is: 189,620.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,990.16 : 544,543.32 = 126,400.08 : x
  2. Step 2: Convert to fraction form
    362,990.16/544,543.32 = 126,400.08/x
  3. Step 3: Cross multiply
    362,990.16x = 544,543.32 × 126,400.08
  4. Step 4: Simplify right side
    362,990.16x = 68,830,319,211.47
  5. Step 5: Solve for x
    x = 68,830,319,211.47/362,990.16
  6. Step 6: Final answer
    x = 189,620.34

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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.