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Finding the Fourth Proportional to 315,009.75, 472,514.64 and 93,393.75

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Solution

The fourth proportional to 315,009.75, 472,514.64 and 93,393.75 is: 140,090.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,009.75 : 472,514.64 = 93,393.75 : x
  2. Step 2: Convert to fraction form
    315,009.75/472,514.64 = 93,393.75/x
  3. Step 3: Cross multiply
    315,009.75x = 472,514.64 × 93,393.75
  4. Step 4: Simplify right side
    315,009.75x = 44,129,914,159.50
  5. Step 5: Solve for x
    x = 44,129,914,159.50/315,009.75
  6. Step 6: Final answer
    x = 140,090.63

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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.