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Finding the Fourth Proportional to 353,243.44, 529,865.40 and 87,009.40

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Solution

The fourth proportional to 353,243.44, 529,865.40 and 87,009.40 is: 130,514.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,243.44 : 529,865.40 = 87,009.40 : x
  2. Step 2: Convert to fraction form
    353,243.44/529,865.40 = 87,009.40/x
  3. Step 3: Cross multiply
    353,243.44x = 529,865.40 × 87,009.40
  4. Step 4: Simplify right side
    353,243.44x = 46,103,270,534.76
  5. Step 5: Solve for x
    x = 46,103,270,534.76/353,243.44
  6. Step 6: Final answer
    x = 130,514.16

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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.