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Finding the Fourth Proportional to 453,997.40, 679,683.90 and 440,875.40

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Solution

The fourth proportional to 453,997.40, 679,683.90 and 440,875.40 is: 660,038.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,997.40 : 679,683.90 = 440,875.40 : x
  2. Step 2: Convert to fraction form
    453,997.40/679,683.90 = 440,875.40/x
  3. Step 3: Cross multiply
    453,997.40x = 679,683.90 × 440,875.40
  4. Step 4: Simplify right side
    453,997.40x = 299,655,911,286.06
  5. Step 5: Solve for x
    x = 299,655,911,286.06/453,997.40
  6. Step 6: Final answer
    x = 660,038.83

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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.