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Finding the Fourth Proportional to 330,326.93, 495,564.23 and 105,700.84

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Solution

The fourth proportional to 330,326.93, 495,564.23 and 105,700.84 is: 158,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,326.93 : 495,564.23 = 105,700.84 : x
  2. Step 2: Convert to fraction form
    330,326.93/495,564.23 = 105,700.84/x
  3. Step 3: Cross multiply
    330,326.93x = 495,564.23 × 105,700.84
  4. Step 4: Simplify right side
    330,326.93x = 52,381,556,923.72
  5. Step 5: Solve for x
    x = 52,381,556,923.72/330,326.93
  6. Step 6: Final answer
    x = 158,574.89

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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.