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Finding the Fourth Proportional to 671,008.48, 925,984.53 and 399,070.41

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Solution

The fourth proportional to 671,008.48, 925,984.53 and 399,070.41 is: 550,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,008.48 : 925,984.53 = 399,070.41 : x
  2. Step 2: Convert to fraction form
    671,008.48/925,984.53 = 399,070.41/x
  3. Step 3: Cross multiply
    671,008.48x = 925,984.53 × 399,070.41
  4. Step 4: Simplify right side
    671,008.48x = 369,533,024,045.41
  5. Step 5: Solve for x
    x = 369,533,024,045.41/671,008.48
  6. Step 6: Final answer
    x = 550,712.90

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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.