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Finding the Fourth Proportional to 292,810.40, 439,264.20 and 115,323.20

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Solution

The fourth proportional to 292,810.40, 439,264.20 and 115,323.20 is: 173,003.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,810.40 : 439,264.20 = 115,323.20 : x
  2. Step 2: Convert to fraction form
    292,810.40/439,264.20 = 115,323.20/x
  3. Step 3: Cross multiply
    292,810.40x = 439,264.20 × 115,323.20
  4. Step 4: Simplify right side
    292,810.40x = 50,657,353,189.44
  5. Step 5: Solve for x
    x = 50,657,353,189.44/292,810.40
  6. Step 6: Final answer
    x = 173,003.94

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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.