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Finding the Fourth Proportional to 521,577.90, 719,070.75 and 445,909.86

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Solution

The fourth proportional to 521,577.90, 719,070.75 and 445,909.86 is: 614,751.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,577.90 : 719,070.75 = 445,909.86 : x
  2. Step 2: Convert to fraction form
    521,577.90/719,070.75 = 445,909.86/x
  3. Step 3: Cross multiply
    521,577.90x = 719,070.75 × 445,909.86
  4. Step 4: Simplify right side
    521,577.90x = 320,640,737,462.60
  5. Step 5: Solve for x
    x = 320,640,737,462.60/521,577.90
  6. Step 6: Final answer
    x = 614,751.39

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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.