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Finding the Fourth Proportional to 926,955, 1,279,197.90 and 503,019

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Solution

The fourth proportional to 926,955, 1,279,197.90 and 503,019 is: 694,166.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,955 : 1,279,197.90 = 503,019 : x
  2. Step 2: Convert to fraction form
    926,955/1,279,197.90 = 503,019/x
  3. Step 3: Cross multiply
    926,955x = 1,279,197.90 × 503,019
  4. Step 4: Simplify right side
    926,955x = 643,460,848,460.10
  5. Step 5: Solve for x
    x = 643,460,848,460.10/926,955
  6. Step 6: Final answer
    x = 694,166.22

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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.