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Finding the Fourth Proportional to 292,400.55, 438,655.47 and 92,667.31

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Solution

The fourth proportional to 292,400.55, 438,655.47 and 92,667.31 is: 139,018.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,400.55 : 438,655.47 = 92,667.31 : x
  2. Step 2: Convert to fraction form
    292,400.55/438,655.47 = 92,667.31/x
  3. Step 3: Cross multiply
    292,400.55x = 438,655.47 × 92,667.31
  4. Step 4: Simplify right side
    292,400.55x = 40,649,020,977.54
  5. Step 5: Solve for x
    x = 40,649,020,977.54/292,400.55
  6. Step 6: Final answer
    x = 139,018.28

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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.