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Finding the Fourth Proportional to 459,606.66, 690,055.86 and 235,128.12

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Solution

The fourth proportional to 459,606.66, 690,055.86 and 235,128.12 is: 353,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,606.66 : 690,055.86 = 235,128.12 : x
  2. Step 2: Convert to fraction form
    459,606.66/690,055.86 = 235,128.12/x
  3. Step 3: Cross multiply
    459,606.66x = 690,055.86 × 235,128.12
  4. Step 4: Simplify right side
    459,606.66x = 162,251,537,056.78
  5. Step 5: Solve for x
    x = 162,251,537,056.78/459,606.66
  6. Step 6: Final answer
    x = 353,022.60

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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.