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Finding the Fourth Proportional to 656,752.40, 985,128.60 and 376,038.80

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Solution

The fourth proportional to 656,752.40, 985,128.60 and 376,038.80 is: 564,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,752.40 : 985,128.60 = 376,038.80 : x
  2. Step 2: Convert to fraction form
    656,752.40/985,128.60 = 376,038.80/x
  3. Step 3: Cross multiply
    656,752.40x = 985,128.60 × 376,038.80
  4. Step 4: Simplify right side
    656,752.40x = 370,446,576,589.68
  5. Step 5: Solve for x
    x = 370,446,576,589.68/656,752.40
  6. Step 6: Final answer
    x = 564,058.20

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Similar ratio
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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.