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Finding the Fourth Proportional to 677,661.48, 935,200.40 and 405,675.22

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Solution

The fourth proportional to 677,661.48, 935,200.40 and 405,675.22 is: 559,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,661.48 : 935,200.40 = 405,675.22 : x
  2. Step 2: Convert to fraction form
    677,661.48/935,200.40 = 405,675.22/x
  3. Step 3: Cross multiply
    677,661.48x = 935,200.40 × 405,675.22
  4. Step 4: Simplify right side
    677,661.48x = 379,387,628,014.09
  5. Step 5: Solve for x
    x = 379,387,628,014.09/677,661.48
  6. Step 6: Final answer
    x = 559,848.30

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1.5x scale

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.