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Finding the Fourth Proportional to 439,818.33, 606,636.32 and 403,636.64

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Solution

The fourth proportional to 439,818.33, 606,636.32 and 403,636.64 is: 556,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,818.33 : 606,636.32 = 403,636.64 : x
  2. Step 2: Convert to fraction form
    439,818.33/606,636.32 = 403,636.64/x
  3. Step 3: Cross multiply
    439,818.33x = 606,636.32 × 403,636.64
  4. Step 4: Simplify right side
    439,818.33x = 244,860,640,855.40
  5. Step 5: Solve for x
    x = 244,860,640,855.40/439,818.33
  6. Step 6: Final answer
    x = 556,731.32

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1.5x scale

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.