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Finding the Fourth Proportional to 693,382.08, 957,041.28 and 391,751.04

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Solution

The fourth proportional to 693,382.08, 957,041.28 and 391,751.04 is: 540,714.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,382.08 : 957,041.28 = 391,751.04 : x
  2. Step 2: Convert to fraction form
    693,382.08/957,041.28 = 391,751.04/x
  3. Step 3: Cross multiply
    693,382.08x = 957,041.28 × 391,751.04
  4. Step 4: Simplify right side
    693,382.08x = 374,921,916,762.93
  5. Step 5: Solve for x
    x = 374,921,916,762.93/693,382.08
  6. Step 6: Final answer
    x = 540,714.75

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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.