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Finding the Fourth Proportional to 352,421.42, 486,342.02 and 191,276.45

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Solution

The fourth proportional to 352,421.42, 486,342.02 and 191,276.45 is: 263,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,421.42 : 486,342.02 = 191,276.45 : x
  2. Step 2: Convert to fraction form
    352,421.42/486,342.02 = 191,276.45/x
  3. Step 3: Cross multiply
    352,421.42x = 486,342.02 × 191,276.45
  4. Step 4: Simplify right side
    352,421.42x = 93,025,775,071.43
  5. Step 5: Solve for x
    x = 93,025,775,071.43/352,421.42
  6. Step 6: Final answer
    x = 263,961.75

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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.