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Finding the Fourth Proportional to 520,776.52, 718,637.54 and 291,293.96

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Solution

The fourth proportional to 520,776.52, 718,637.54 and 291,293.96 is: 401,966.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,776.52 : 718,637.54 = 291,293.96 : x
  2. Step 2: Convert to fraction form
    520,776.52/718,637.54 = 291,293.96/x
  3. Step 3: Cross multiply
    520,776.52x = 718,637.54 × 291,293.96
  4. Step 4: Simplify right side
    520,776.52x = 209,334,774,831.26
  5. Step 5: Solve for x
    x = 209,334,774,831.26/520,776.52
  6. Step 6: Final answer
    x = 401,966.61

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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.