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Finding the Fourth Proportional to 691,466.34, 954,153.70 and 385,514

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Solution

The fourth proportional to 691,466.34, 954,153.70 and 385,514 is: 531,970.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,466.34 : 954,153.70 = 385,514 : x
  2. Step 2: Convert to fraction form
    691,466.34/954,153.70 = 385,514/x
  3. Step 3: Cross multiply
    691,466.34x = 954,153.70 × 385,514
  4. Step 4: Simplify right side
    691,466.34x = 367,839,609,501.80
  5. Step 5: Solve for x
    x = 367,839,609,501.80/691,466.34
  6. Step 6: Final answer
    x = 531,970.38

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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.