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Finding the Fourth Proportional to 657,699.40, 986,549.10 and 551,411.20

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Solution

The fourth proportional to 657,699.40, 986,549.10 and 551,411.20 is: 827,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,699.40 : 986,549.10 = 551,411.20 : x
  2. Step 2: Convert to fraction form
    657,699.40/986,549.10 = 551,411.20/x
  3. Step 3: Cross multiply
    657,699.40x = 986,549.10 × 551,411.20
  4. Step 4: Simplify right side
    657,699.40x = 543,994,223,089.92
  5. Step 5: Solve for x
    x = 543,994,223,089.92/657,699.40
  6. Step 6: Final answer
    x = 827,116.80

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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.