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Finding the Fourth Proportional to 647,036.20, 970,554.30 and 618,005.80

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Solution

The fourth proportional to 647,036.20, 970,554.30 and 618,005.80 is: 927,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,036.20 : 970,554.30 = 618,005.80 : x
  2. Step 2: Convert to fraction form
    647,036.20/970,554.30 = 618,005.80/x
  3. Step 3: Cross multiply
    647,036.20x = 970,554.30 × 618,005.80
  4. Step 4: Simplify right side
    647,036.20x = 599,808,186,614.94
  5. Step 5: Solve for x
    x = 599,808,186,614.94/647,036.20
  6. Step 6: Final answer
    x = 927,008.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.