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Finding the Fourth Proportional to 520,561.01, 718,370.15 and 291,118.65

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Solution

The fourth proportional to 520,561.01, 718,370.15 and 291,118.65 is: 401,741.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,561.01 : 718,370.15 = 291,118.65 : x
  2. Step 2: Convert to fraction form
    520,561.01/718,370.15 = 291,118.65/x
  3. Step 3: Cross multiply
    520,561.01x = 718,370.15 × 291,118.65
  4. Step 4: Simplify right side
    520,561.01x = 209,130,946,812.70
  5. Step 5: Solve for x
    x = 209,130,946,812.70/520,561.01
  6. Step 6: Final answer
    x = 401,741.48

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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.