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Finding the Fourth Proportional to 935,338.16, 1,403,010.16 and 261,415

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Solution

The fourth proportional to 935,338.16, 1,403,010.16 and 261,415 is: 392,123.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,338.16 : 1,403,010.16 = 261,415 : x
  2. Step 2: Convert to fraction form
    935,338.16/1,403,010.16 = 261,415/x
  3. Step 3: Cross multiply
    935,338.16x = 1,403,010.16 × 261,415
  4. Step 4: Simplify right side
    935,338.16x = 366,767,900,976.40
  5. Step 5: Solve for x
    x = 366,767,900,976.40/935,338.16
  6. Step 6: Final answer
    x = 392,123.32

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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.