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Finding the Fourth Proportional to 605,215.70, 907,823.55 and 530,420.30

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Solution

The fourth proportional to 605,215.70, 907,823.55 and 530,420.30 is: 795,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,215.70 : 907,823.55 = 530,420.30 : x
  2. Step 2: Convert to fraction form
    605,215.70/907,823.55 = 530,420.30/x
  3. Step 3: Cross multiply
    605,215.70x = 907,823.55 × 530,420.30
  4. Step 4: Simplify right side
    605,215.70x = 481,528,039,738.07
  5. Step 5: Solve for x
    x = 481,528,039,738.07/605,215.70
  6. Step 6: Final answer
    x = 795,630.45

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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.