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Finding the Fourth Proportional to 630,412.88, 869,969.97 and 404,058.38

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Solution

The fourth proportional to 630,412.88, 869,969.97 and 404,058.38 is: 557,600.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,412.88 : 869,969.97 = 404,058.38 : x
  2. Step 2: Convert to fraction form
    630,412.88/869,969.97 = 404,058.38/x
  3. Step 3: Cross multiply
    630,412.88x = 869,969.97 × 404,058.38
  4. Step 4: Simplify right side
    630,412.88x = 351,518,652,377.00
  5. Step 5: Solve for x
    x = 351,518,652,377.00/630,412.88
  6. Step 6: Final answer
    x = 557,600.69

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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.