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Finding the Fourth Proportional to 691,002.63, 953,257.68 and 404,345.25

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Solution

The fourth proportional to 691,002.63, 953,257.68 and 404,345.25 is: 557,805.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,002.63 : 953,257.68 = 404,345.25 : x
  2. Step 2: Convert to fraction form
    691,002.63/953,257.68 = 404,345.25/x
  3. Step 3: Cross multiply
    691,002.63x = 953,257.68 × 404,345.25
  4. Step 4: Simplify right side
    691,002.63x = 385,445,214,934.02
  5. Step 5: Solve for x
    x = 385,445,214,934.02/691,002.63
  6. Step 6: Final answer
    x = 557,805.71

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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.