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Finding the Fourth Proportional to 975,872.40, 1,463,117.40 and 443,648.40

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Solution

The fourth proportional to 975,872.40, 1,463,117.40 and 443,648.40 is: 665,158.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    975,872.40 : 1,463,117.40 = 443,648.40 : x
  2. Step 2: Convert to fraction form
    975,872.40/1,463,117.40 = 443,648.40/x
  3. Step 3: Cross multiply
    975,872.40x = 1,463,117.40 × 443,648.40
  4. Step 4: Simplify right side
    975,872.40x = 649,109,693,522.16
  5. Step 5: Solve for x
    x = 649,109,693,522.16/975,872.40
  6. Step 6: Final answer
    x = 665,158.37

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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.