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Finding the Fourth Proportional to 170,988.54, 235,962.90 and 94,512.78

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Solution

The fourth proportional to 170,988.54, 235,962.90 and 94,512.78 is: 130,426.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,988.54 : 235,962.90 = 94,512.78 : x
  2. Step 2: Convert to fraction form
    170,988.54/235,962.90 = 94,512.78/x
  3. Step 3: Cross multiply
    170,988.54x = 235,962.90 × 94,512.78
  4. Step 4: Simplify right side
    170,988.54x = 22,301,509,655.86
  5. Step 5: Solve for x
    x = 22,301,509,655.86/170,988.54
  6. Step 6: Final answer
    x = 130,426.93

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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.