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Finding the Fourth Proportional to 102,886.99, 154,347.78 and 35,416.33

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Solution

The fourth proportional to 102,886.99, 154,347.78 and 35,416.33 is: 53,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,886.99 : 154,347.78 = 35,416.33 : x
  2. Step 2: Convert to fraction form
    102,886.99/154,347.78 = 35,416.33/x
  3. Step 3: Cross multiply
    102,886.99x = 154,347.78 × 35,416.33
  4. Step 4: Simplify right side
    102,886.99x = 5,466,431,842.35
  5. Step 5: Solve for x
    x = 5,466,431,842.35/102,886.99
  6. Step 6: Final answer
    x = 53,130.45

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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.