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Finding the Fourth Proportional to 614,368.80, 921,553.20 and 561,224.70

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Solution

The fourth proportional to 614,368.80, 921,553.20 and 561,224.70 is: 841,837.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,368.80 : 921,553.20 = 561,224.70 : x
  2. Step 2: Convert to fraction form
    614,368.80/921,553.20 = 561,224.70/x
  3. Step 3: Cross multiply
    614,368.80x = 921,553.20 × 561,224.70
  4. Step 4: Simplify right side
    614,368.80x = 517,198,418,204.04
  5. Step 5: Solve for x
    x = 517,198,418,204.04/614,368.80
  6. Step 6: Final answer
    x = 841,837.05

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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.