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Finding the Fourth Proportional to 679,656.84, 937,986.20 and 373,787.12

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Solution

The fourth proportional to 679,656.84, 937,986.20 and 373,787.12 is: 515,859.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,656.84 : 937,986.20 = 373,787.12 : x
  2. Step 2: Convert to fraction form
    679,656.84/937,986.20 = 373,787.12/x
  3. Step 3: Cross multiply
    679,656.84x = 937,986.20 × 373,787.12
  4. Step 4: Simplify right side
    679,656.84x = 350,607,153,738.88
  5. Step 5: Solve for x
    x = 350,607,153,738.88/679,656.84
  6. Step 6: Final answer
    x = 515,859.08

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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.