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Finding the Fourth Proportional to 209,701.80, 314,552.70 and 104,725.80

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Solution

The fourth proportional to 209,701.80, 314,552.70 and 104,725.80 is: 157,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,701.80 : 314,552.70 = 104,725.80 : x
  2. Step 2: Convert to fraction form
    209,701.80/314,552.70 = 104,725.80/x
  3. Step 3: Cross multiply
    209,701.80x = 314,552.70 × 104,725.80
  4. Step 4: Simplify right side
    209,701.80x = 32,941,783,149.66
  5. Step 5: Solve for x
    x = 32,941,783,149.66/209,701.80
  6. Step 6: Final answer
    x = 157,088.70

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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.