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Finding the Fourth Proportional to 511,430.81, 767,023.02 and 156,447.90

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Solution

The fourth proportional to 511,430.81, 767,023.02 and 156,447.90 is: 234,634.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,430.81 : 767,023.02 = 156,447.90 : x
  2. Step 2: Convert to fraction form
    511,430.81/767,023.02 = 156,447.90/x
  3. Step 3: Cross multiply
    511,430.81x = 767,023.02 × 156,447.90
  4. Step 4: Simplify right side
    511,430.81x = 119,999,140,730.66
  5. Step 5: Solve for x
    x = 119,999,140,730.66/511,430.81
  6. Step 6: Final answer
    x = 234,634.17

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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.