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Finding the Fourth Proportional to 521,565.90, 719,054.19 and 445,897.77

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Solution

The fourth proportional to 521,565.90, 719,054.19 and 445,897.77 is: 614,734.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,565.90 : 719,054.19 = 445,897.77 : x
  2. Step 2: Convert to fraction form
    521,565.90/719,054.19 = 445,897.77/x
  3. Step 3: Cross multiply
    521,565.90x = 719,054.19 × 445,897.77
  4. Step 4: Simplify right side
    521,565.90x = 320,624,659,830.16
  5. Step 5: Solve for x
    x = 320,624,659,830.16/521,565.90
  6. Step 6: Final answer
    x = 614,734.71

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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.