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Finding the Fourth Proportional to 671,712.81, 926,663.79 and 453,851.16

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Solution

The fourth proportional to 671,712.81, 926,663.79 and 453,851.16 is: 626,111.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,712.81 : 926,663.79 = 453,851.16 : x
  2. Step 2: Convert to fraction form
    671,712.81/926,663.79 = 453,851.16/x
  3. Step 3: Cross multiply
    671,712.81x = 926,663.79 × 453,851.16
  4. Step 4: Simplify right side
    671,712.81x = 420,567,436,021.50
  5. Step 5: Solve for x
    x = 420,567,436,021.50/671,712.81
  6. Step 6: Final answer
    x = 626,111.98

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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.