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Finding the Fourth Proportional to 670,387.06, 925,079.43 and 394,701.40

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Solution

The fourth proportional to 670,387.06, 925,079.43 and 394,701.40 is: 544,655.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,387.06 : 925,079.43 = 394,701.40 : x
  2. Step 2: Convert to fraction form
    670,387.06/925,079.43 = 394,701.40/x
  3. Step 3: Cross multiply
    670,387.06x = 925,079.43 × 394,701.40
  4. Step 4: Simplify right side
    670,387.06x = 365,130,146,132.20
  5. Step 5: Solve for x
    x = 365,130,146,132.20/670,387.06
  6. Step 6: Final answer
    x = 544,655.72

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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.