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Finding the Fourth Proportional to 616,173.90, 922,705.65 and 404,666.70

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Solution

The fourth proportional to 616,173.90, 922,705.65 and 404,666.70 is: 605,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,173.90 : 922,705.65 = 404,666.70 : x
  2. Step 2: Convert to fraction form
    616,173.90/922,705.65 = 404,666.70/x
  3. Step 3: Cross multiply
    616,173.90x = 922,705.65 × 404,666.70
  4. Step 4: Simplify right side
    616,173.90x = 373,388,250,456.86
  5. Step 5: Solve for x
    x = 373,388,250,456.86/616,173.90
  6. Step 6: Final answer
    x = 605,978.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.