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Finding the Fourth Proportional to 455,818.90, 683,728.35 and 404,643.10

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Solution

The fourth proportional to 455,818.90, 683,728.35 and 404,643.10 is: 606,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,818.90 : 683,728.35 = 404,643.10 : x
  2. Step 2: Convert to fraction form
    455,818.90/683,728.35 = 404,643.10/x
  3. Step 3: Cross multiply
    455,818.90x = 683,728.35 × 404,643.10
  4. Step 4: Simplify right side
    455,818.90x = 276,665,959,101.89
  5. Step 5: Solve for x
    x = 276,665,959,101.89/455,818.90
  6. Step 6: Final answer
    x = 606,964.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.