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Finding the Fourth Proportional to 554,612.10, 831,918.15 and 519,620.10

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Solution

The fourth proportional to 554,612.10, 831,918.15 and 519,620.10 is: 779,430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,612.10 : 831,918.15 = 519,620.10 : x
  2. Step 2: Convert to fraction form
    554,612.10/831,918.15 = 519,620.10/x
  3. Step 3: Cross multiply
    554,612.10x = 831,918.15 × 519,620.10
  4. Step 4: Simplify right side
    554,612.10x = 432,281,392,294.82
  5. Step 5: Solve for x
    x = 432,281,392,294.82/554,612.10
  6. Step 6: Final answer
    x = 779,430.15

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