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Finding the Fourth Proportional to 693,915.35, 957,549.88 and 421,945.97

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Solution

The fourth proportional to 693,915.35, 957,549.88 and 421,945.97 is: 582,253.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,915.35 : 957,549.88 = 421,945.97 : x
  2. Step 2: Convert to fraction form
    693,915.35/957,549.88 = 421,945.97/x
  3. Step 3: Cross multiply
    693,915.35x = 957,549.88 × 421,945.97
  4. Step 4: Simplify right side
    693,915.35x = 404,034,312,939.98
  5. Step 5: Solve for x
    x = 404,034,312,939.98/693,915.35
  6. Step 6: Final answer
    x = 582,253.03

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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.