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Finding the Fourth Proportional to 303,515.30, 425,543.50 and 303,515.30

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Solution

The fourth proportional to 303,515.30, 425,543.50 and 303,515.30 is: 425,543.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,515.30 : 425,543.50 = 303,515.30 : x
  2. Step 2: Convert to fraction form
    303,515.30/425,543.50 = 303,515.30/x
  3. Step 3: Cross multiply
    303,515.30x = 425,543.50 × 303,515.30
  4. Step 4: Simplify right side
    303,515.30x = 129,158,963,065.55
  5. Step 5: Solve for x
    x = 129,158,963,065.55/303,515.30
  6. Step 6: Final answer
    x = 425,543.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.