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Finding the Fourth Proportional to 343,403.20, 515,096.70 and 94,085.20

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Solution

The fourth proportional to 343,403.20, 515,096.70 and 94,085.20 is: 141,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,403.20 : 515,096.70 = 94,085.20 : x
  2. Step 2: Convert to fraction form
    343,403.20/515,096.70 = 94,085.20/x
  3. Step 3: Cross multiply
    343,403.20x = 515,096.70 × 94,085.20
  4. Step 4: Simplify right side
    343,403.20x = 48,462,976,038.84
  5. Step 5: Solve for x
    x = 48,462,976,038.84/343,403.20
  6. Step 6: Final answer
    x = 141,125.58

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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.