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Finding the Fourth Proportional to 518,810.60, 776,987.10 and 351,693.80

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Solution

The fourth proportional to 518,810.60, 776,987.10 and 351,693.80 is: 526,707.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,810.60 : 776,987.10 = 351,693.80 : x
  2. Step 2: Convert to fraction form
    518,810.60/776,987.10 = 351,693.80/x
  3. Step 3: Cross multiply
    518,810.60x = 776,987.10 × 351,693.80
  4. Step 4: Simplify right side
    518,810.60x = 273,261,545,749.98
  5. Step 5: Solve for x
    x = 273,261,545,749.98/518,810.60
  6. Step 6: Final answer
    x = 526,707.72

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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.