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Finding the Fourth Proportional to 352,405.72, 486,328.74 and 191,267.56

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Solution

The fourth proportional to 352,405.72, 486,328.74 and 191,267.56 is: 263,954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,405.72 : 486,328.74 = 191,267.56 : x
  2. Step 2: Convert to fraction form
    352,405.72/486,328.74 = 191,267.56/x
  3. Step 3: Cross multiply
    352,405.72x = 486,328.74 × 191,267.56
  4. Step 4: Simplify right side
    352,405.72x = 93,018,911,457.67
  5. Step 5: Solve for x
    x = 93,018,911,457.67/352,405.72
  6. Step 6: Final answer
    x = 263,954.03

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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.