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Finding the Fourth Proportional to 353,182.40, 529,773.60 and 86,940.80

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Solution

The fourth proportional to 353,182.40, 529,773.60 and 86,940.80 is: 130,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,182.40 : 529,773.60 = 86,940.80 : x
  2. Step 2: Convert to fraction form
    353,182.40/529,773.60 = 86,940.80/x
  3. Step 3: Cross multiply
    353,182.40x = 529,773.60 × 86,940.80
  4. Step 4: Simplify right side
    353,182.40x = 46,058,940,602.88
  5. Step 5: Solve for x
    x = 46,058,940,602.88/353,182.40
  6. Step 6: Final answer
    x = 130,411.20

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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.