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Finding the Fourth Proportional to 528,622.86, 729,500.27 and 286,905.44

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Solution

The fourth proportional to 528,622.86, 729,500.27 and 286,905.44 is: 395,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,622.86 : 729,500.27 = 286,905.44 : x
  2. Step 2: Convert to fraction form
    528,622.86/729,500.27 = 286,905.44/x
  3. Step 3: Cross multiply
    528,622.86x = 729,500.27 × 286,905.44
  4. Step 4: Simplify right side
    528,622.86x = 209,297,595,944.47
  5. Step 5: Solve for x
    x = 209,297,595,944.47/528,622.86
  6. Step 6: Final answer
    x = 395,929.90

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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.