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Finding the Fourth Proportional to 403,792.20, 605,688.30 and 373,379.40

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Solution

The fourth proportional to 403,792.20, 605,688.30 and 373,379.40 is: 560,069.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,792.20 : 605,688.30 = 373,379.40 : x
  2. Step 2: Convert to fraction form
    403,792.20/605,688.30 = 373,379.40/x
  3. Step 3: Cross multiply
    403,792.20x = 605,688.30 × 373,379.40
  4. Step 4: Simplify right side
    403,792.20x = 226,151,534,041.02
  5. Step 5: Solve for x
    x = 226,151,534,041.02/403,792.20
  6. Step 6: Final answer
    x = 560,069.10

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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.