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Finding the Fourth Proportional to 456,712.60, 685,166.10 and 141,201.40

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Solution

The fourth proportional to 456,712.60, 685,166.10 and 141,201.40 is: 211,832.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,712.60 : 685,166.10 = 141,201.40 : x
  2. Step 2: Convert to fraction form
    456,712.60/685,166.10 = 141,201.40/x
  3. Step 3: Cross multiply
    456,712.60x = 685,166.10 × 141,201.40
  4. Step 4: Simplify right side
    456,712.60x = 96,746,412,552.54
  5. Step 5: Solve for x
    x = 96,746,412,552.54/456,712.60
  6. Step 6: Final answer
    x = 211,832.15

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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.