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Finding the Fourth Proportional to 916,602, 1,264,919.40 and 514,202.64

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Solution

The fourth proportional to 916,602, 1,264,919.40 and 514,202.64 is: 709,604.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,602 : 1,264,919.40 = 514,202.64 : x
  2. Step 2: Convert to fraction form
    916,602/1,264,919.40 = 514,202.64/x
  3. Step 3: Cross multiply
    916,602x = 1,264,919.40 × 514,202.64
  4. Step 4: Simplify right side
    916,602x = 650,424,894,867.22
  5. Step 5: Solve for x
    x = 650,424,894,867.22/916,602
  6. Step 6: Final answer
    x = 709,604.49

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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.