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Finding the Fourth Proportional to 539,569.72, 744,490.70 and 313,093.72

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Solution

The fourth proportional to 539,569.72, 744,490.70 and 313,093.72 is: 432,002.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,569.72 : 744,490.70 = 313,093.72 : x
  2. Step 2: Convert to fraction form
    539,569.72/744,490.70 = 313,093.72/x
  3. Step 3: Cross multiply
    539,569.72x = 744,490.70 × 313,093.72
  4. Step 4: Simplify right side
    539,569.72x = 233,095,362,768.40
  5. Step 5: Solve for x
    x = 233,095,362,768.40/539,569.72
  6. Step 6: Final answer
    x = 432,002.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.