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Finding the Fourth Proportional to 353,050.69, 529,571.42 and 86,813.51

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Solution

The fourth proportional to 353,050.69, 529,571.42 and 86,813.51 is: 130,219.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,050.69 : 529,571.42 = 86,813.51 : x
  2. Step 2: Convert to fraction form
    353,050.69/529,571.42 = 86,813.51/x
  3. Step 3: Cross multiply
    353,050.69x = 529,571.42 × 86,813.51
  4. Step 4: Simplify right side
    353,050.69x = 45,973,953,243.64
  5. Step 5: Solve for x
    x = 45,973,953,243.64/353,050.69
  6. Step 6: Final answer
    x = 130,219.13

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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.