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Finding the Fourth Proportional to 677,625.79, 935,152.91 and 405,641.05

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Solution

The fourth proportional to 677,625.79, 935,152.91 and 405,641.05 is: 559,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,625.79 : 935,152.91 = 405,641.05 : x
  2. Step 2: Convert to fraction form
    677,625.79/935,152.91 = 405,641.05/x
  3. Step 3: Cross multiply
    677,625.79x = 935,152.91 × 405,641.05
  4. Step 4: Simplify right side
    677,625.79x = 379,336,408,984.85
  5. Step 5: Solve for x
    x = 379,336,408,984.85/677,625.79
  6. Step 6: Final answer
    x = 559,802.20

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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.