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Finding the Fourth Proportional to 674,681.26, 930,457.21 and 559,777.90

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Solution

The fourth proportional to 674,681.26, 930,457.21 and 559,777.90 is: 771,993.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,681.26 : 930,457.21 = 559,777.90 : x
  2. Step 2: Convert to fraction form
    674,681.26/930,457.21 = 559,777.90/x
  3. Step 3: Cross multiply
    674,681.26x = 930,457.21 × 559,777.90
  4. Step 4: Simplify right side
    674,681.26x = 520,849,383,053.66
  5. Step 5: Solve for x
    x = 520,849,383,053.66/674,681.26
  6. Step 6: Final answer
    x = 771,993.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.