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Finding the Fourth Proportional to 648,438.57, 894,841.74 and 376,573.23

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Solution

The fourth proportional to 648,438.57, 894,841.74 and 376,573.23 is: 519,669.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,438.57 : 894,841.74 = 376,573.23 : x
  2. Step 2: Convert to fraction form
    648,438.57/894,841.74 = 376,573.23/x
  3. Step 3: Cross multiply
    648,438.57x = 894,841.74 × 376,573.23
  4. Step 4: Simplify right side
    648,438.57x = 336,973,444,370.62
  5. Step 5: Solve for x
    x = 336,973,444,370.62/648,438.57
  6. Step 6: Final answer
    x = 519,669.03

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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.