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Finding the Fourth Proportional to 916,605, 1,264,923.54 and 514,205.64

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Solution

The fourth proportional to 916,605, 1,264,923.54 and 514,205.64 is: 709,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,605 : 1,264,923.54 = 514,205.64 : x
  2. Step 2: Convert to fraction form
    916,605/1,264,923.54 = 514,205.64/x
  3. Step 3: Cross multiply
    916,605x = 1,264,923.54 × 514,205.64
  4. Step 4: Simplify right side
    916,605x = 650,430,818,436.77
  5. Step 5: Solve for x
    x = 650,430,818,436.77/916,605
  6. Step 6: Final answer
    x = 709,608.63

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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.