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Finding the Fourth Proportional to 672,820.81, 928,515.14 and 366,913.94

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Solution

The fourth proportional to 672,820.81, 928,515.14 and 366,913.94 is: 506,353.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,820.81 : 928,515.14 = 366,913.94 : x
  2. Step 2: Convert to fraction form
    672,820.81/928,515.14 = 366,913.94/x
  3. Step 3: Cross multiply
    672,820.81x = 928,515.14 × 366,913.94
  4. Step 4: Simplify right side
    672,820.81x = 340,685,145,329.72
  5. Step 5: Solve for x
    x = 340,685,145,329.72/672,820.81
  6. Step 6: Final answer
    x = 506,353.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.