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Finding the Fourth Proportional to 986,603, 1,361,521.90 and 533,903.72

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Solution

The fourth proportional to 986,603, 1,361,521.90 and 533,903.72 is: 736,792.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,603 : 1,361,521.90 = 533,903.72 : x
  2. Step 2: Convert to fraction form
    986,603/1,361,521.90 = 533,903.72/x
  3. Step 3: Cross multiply
    986,603x = 1,361,521.90 × 533,903.72
  4. Step 4: Simplify right side
    986,603x = 726,921,607,271.47
  5. Step 5: Solve for x
    x = 726,921,607,271.47/986,603
  6. Step 6: Final answer
    x = 736,792.42

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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.