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Finding the Fourth Proportional to 352,574.64, 486,551.34 and 191,428.38

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Solution

The fourth proportional to 352,574.64, 486,551.34 and 191,428.38 is: 264,170.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,574.64 : 486,551.34 = 191,428.38 : x
  2. Step 2: Convert to fraction form
    352,574.64/486,551.34 = 191,428.38/x
  3. Step 3: Cross multiply
    352,574.64x = 486,551.34 × 191,428.38
  4. Step 4: Simplify right side
    352,574.64x = 93,139,734,803.03
  5. Step 5: Solve for x
    x = 93,139,734,803.03/352,574.64
  6. Step 6: Final answer
    x = 264,170.26

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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.