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Finding the Fourth Proportional to 472,712.40, 708,477.30 and 236,121.12

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Solution

The fourth proportional to 472,712.40, 708,477.30 and 236,121.12 is: 353,886.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,712.40 : 708,477.30 = 236,121.12 : x
  2. Step 2: Convert to fraction form
    472,712.40/708,477.30 = 236,121.12/x
  3. Step 3: Cross multiply
    472,712.40x = 708,477.30 × 236,121.12
  4. Step 4: Simplify right side
    472,712.40x = 167,286,453,570.58
  5. Step 5: Solve for x
    x = 167,286,453,570.58/472,712.40
  6. Step 6: Final answer
    x = 353,886.32

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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.