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Finding the Fourth Proportional to 35,915.78, 53,873.70 and 11,291.78

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Solution

The fourth proportional to 35,915.78, 53,873.70 and 11,291.78 is: 16,937.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,915.78 : 53,873.70 = 11,291.78 : x
  2. Step 2: Convert to fraction form
    35,915.78/53,873.70 = 11,291.78/x
  3. Step 3: Cross multiply
    35,915.78x = 53,873.70 × 11,291.78
  4. Step 4: Simplify right side
    35,915.78x = 608,329,968.19
  5. Step 5: Solve for x
    x = 608,329,968.19/35,915.78
  6. Step 6: Final answer
    x = 16,937.68

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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.