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Finding the Fourth Proportional to 530,738.60, 732,401.88 and 289,019.30

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Solution

The fourth proportional to 530,738.60, 732,401.88 and 289,019.30 is: 398,837.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,738.60 : 732,401.88 = 289,019.30 : x
  2. Step 2: Convert to fraction form
    530,738.60/732,401.88 = 289,019.30/x
  3. Step 3: Cross multiply
    530,738.60x = 732,401.88 × 289,019.30
  4. Step 4: Simplify right side
    530,738.60x = 211,678,278,676.28
  5. Step 5: Solve for x
    x = 211,678,278,676.28/530,738.60
  6. Step 6: Final answer
    x = 398,837.17

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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.