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Finding the Fourth Proportional to 521,399.25, 719,530.97 and 282,935.25

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Solution

The fourth proportional to 521,399.25, 719,530.97 and 282,935.25 is: 390,450.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,399.25 : 719,530.97 = 282,935.25 : x
  2. Step 2: Convert to fraction form
    521,399.25/719,530.97 = 282,935.25/x
  3. Step 3: Cross multiply
    521,399.25x = 719,530.97 × 282,935.25
  4. Step 4: Simplify right side
    521,399.25x = 203,580,673,465.02
  5. Step 5: Solve for x
    x = 203,580,673,465.02/521,399.25
  6. Step 6: Final answer
    x = 390,450.65

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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.