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Finding the Fourth Proportional to 622,215.19, 858,601.85 and 346,552.01

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Solution

The fourth proportional to 622,215.19, 858,601.85 and 346,552.01 is: 478,211.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,215.19 : 858,601.85 = 346,552.01 : x
  2. Step 2: Convert to fraction form
    622,215.19/858,601.85 = 346,552.01/x
  3. Step 3: Cross multiply
    622,215.19x = 858,601.85 × 346,552.01
  4. Step 4: Simplify right side
    622,215.19x = 297,550,196,907.22
  5. Step 5: Solve for x
    x = 297,550,196,907.22/622,215.19
  6. Step 6: Final answer
    x = 478,211.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.