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Finding the Fourth Proportional to 658,691.14, 908,643.14 and 400,647.01

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Solution

The fourth proportional to 658,691.14, 908,643.14 and 400,647.01 is: 552,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,691.14 : 908,643.14 = 400,647.01 : x
  2. Step 2: Convert to fraction form
    658,691.14/908,643.14 = 400,647.01/x
  3. Step 3: Cross multiply
    658,691.14x = 908,643.14 × 400,647.01
  4. Step 4: Simplify right side
    658,691.14x = 364,045,157,256.12
  5. Step 5: Solve for x
    x = 364,045,157,256.12/658,691.14
  6. Step 6: Final answer
    x = 552,679.60

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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.