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Finding the Fourth Proportional to 401,654.89, 554,130.88 and 256,466.04

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Solution

The fourth proportional to 401,654.89, 554,130.88 and 256,466.04 is: 353,825.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,654.89 : 554,130.88 = 256,466.04 : x
  2. Step 2: Convert to fraction form
    401,654.89/554,130.88 = 256,466.04/x
  3. Step 3: Cross multiply
    401,654.89x = 554,130.88 × 256,466.04
  4. Step 4: Simplify right side
    401,654.89x = 142,115,752,435.32
  5. Step 5: Solve for x
    x = 142,115,752,435.32/401,654.89
  6. Step 6: Final answer
    x = 353,825.53

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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.