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Finding the Fourth Proportional to 255,049.64, 351,931.35 and 153,053.43

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Solution

The fourth proportional to 255,049.64, 351,931.35 and 153,053.43 is: 211,191.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,049.64 : 351,931.35 = 153,053.43 : x
  2. Step 2: Convert to fraction form
    255,049.64/351,931.35 = 153,053.43/x
  3. Step 3: Cross multiply
    255,049.64x = 351,931.35 × 153,053.43
  4. Step 4: Simplify right side
    255,049.64x = 53,864,300,242.03
  5. Step 5: Solve for x
    x = 53,864,300,242.03/255,049.64
  6. Step 6: Final answer
    x = 211,191.44

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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.