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Finding the Fourth Proportional to 472,392,686.40, 708,589,029.60 and 374,820,118.80

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Solution

The fourth proportional to 472,392,686.40, 708,589,029.60 and 374,820,118.80 is: 562,230,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,686.40 : 708,589,029.60 = 374,820,118.80 : x
  2. Step 2: Convert to fraction form
    472,392,686.40/708,589,029.60 = 374,820,118.80/x
  3. Step 3: Cross multiply
    472,392,686.40x = 708,589,029.60 × 374,820,118.80
  4. Step 4: Simplify right side
    472,392,686.40x = 265,593,424,255,048,736
  5. Step 5: Solve for x
    x = 265,593,424,255,048,736/472,392,686.40
  6. Step 6: Final answer
    x = 562,230,178.20

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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.