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Finding the Fourth Proportional to 690,967.50, 953,564.76 and 385,044.30

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Solution

The fourth proportional to 690,967.50, 953,564.76 and 385,044.30 is: 531,377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,967.50 : 953,564.76 = 385,044.30 : x
  2. Step 2: Convert to fraction form
    690,967.50/953,564.76 = 385,044.30/x
  3. Step 3: Cross multiply
    690,967.50x = 953,564.76 × 385,044.30
  4. Step 4: Simplify right side
    690,967.50x = 367,164,675,518.87
  5. Step 5: Solve for x
    x = 367,164,675,518.87/690,967.50
  6. Step 6: Final answer
    x = 531,377.63

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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.