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Finding the Fourth Proportional to 145,859.52, 218,701.70 and 57,007.12

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Solution

The fourth proportional to 145,859.52, 218,701.70 and 57,007.12 is: 85,476.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,859.52 : 218,701.70 = 57,007.12 : x
  2. Step 2: Convert to fraction form
    145,859.52/218,701.70 = 57,007.12/x
  3. Step 3: Cross multiply
    145,859.52x = 218,701.70 × 57,007.12
  4. Step 4: Simplify right side
    145,859.52x = 12,467,554,056.10
  5. Step 5: Solve for x
    x = 12,467,554,056.10/145,859.52
  6. Step 6: Final answer
    x = 85,476.45

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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.