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Finding the Fourth Proportional to 626,185.89, 864,136.76 and 354,248.37

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Solution

The fourth proportional to 626,185.89, 864,136.76 and 354,248.37 is: 488,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,185.89 : 864,136.76 = 354,248.37 : x
  2. Step 2: Convert to fraction form
    626,185.89/864,136.76 = 354,248.37/x
  3. Step 3: Cross multiply
    626,185.89x = 864,136.76 × 354,248.37
  4. Step 4: Simplify right side
    626,185.89x = 306,119,036,915.84
  5. Step 5: Solve for x
    x = 306,119,036,915.84/626,185.89
  6. Step 6: Final answer
    x = 488,862.88

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Double scale
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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.