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Finding the Fourth Proportional to 575,670.60, 864,391.65 and 513,078.66

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Solution

The fourth proportional to 575,670.60, 864,391.65 and 513,078.66 is: 770,407.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,670.60 : 864,391.65 = 513,078.66 : x
  2. Step 2: Convert to fraction form
    575,670.60/864,391.65 = 513,078.66/x
  3. Step 3: Cross multiply
    575,670.60x = 864,391.65 × 513,078.66
  4. Step 4: Simplify right side
    575,670.60x = 443,500,909,497.19
  5. Step 5: Solve for x
    x = 443,500,909,497.19/575,670.60
  6. Step 6: Final answer
    x = 770,407.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.