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Finding the Fourth Proportional to 253,698.09, 350,088.33 and 138,953.89

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Solution

The fourth proportional to 253,698.09, 350,088.33 and 138,953.89 is: 191,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,698.09 : 350,088.33 = 138,953.89 : x
  2. Step 2: Convert to fraction form
    253,698.09/350,088.33 = 138,953.89/x
  3. Step 3: Cross multiply
    253,698.09x = 350,088.33 × 138,953.89
  4. Step 4: Simplify right side
    253,698.09x = 48,646,135,297.10
  5. Step 5: Solve for x
    x = 48,646,135,297.10/253,698.09
  6. Step 6: Final answer
    x = 191,748.13

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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.