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Finding the Fourth Proportional to 705,339.18, 972,709.83 and 543,935.34

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Solution

The fourth proportional to 705,339.18, 972,709.83 and 543,935.34 is: 750,123.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,339.18 : 972,709.83 = 543,935.34 : x
  2. Step 2: Convert to fraction form
    705,339.18/972,709.83 = 543,935.34/x
  3. Step 3: Cross multiply
    705,339.18x = 972,709.83 × 543,935.34
  4. Step 4: Simplify right side
    705,339.18x = 529,091,252,102.39
  5. Step 5: Solve for x
    x = 529,091,252,102.39/705,339.18
  6. Step 6: Final answer
    x = 750,123.16

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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.