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Finding the Fourth Proportional to 520,683.90, 718,534.26 and 294,329.40

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Solution

The fourth proportional to 520,683.90, 718,534.26 and 294,329.40 is: 406,169.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,683.90 : 718,534.26 = 294,329.40 : x
  2. Step 2: Convert to fraction form
    520,683.90/718,534.26 = 294,329.40/x
  3. Step 3: Cross multiply
    520,683.90x = 718,534.26 × 294,329.40
  4. Step 4: Simplify right side
    520,683.90x = 211,485,757,625.24
  5. Step 5: Solve for x
    x = 211,485,757,625.24/520,683.90
  6. Step 6: Final answer
    x = 406,169.19

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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.