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Finding the Fourth Proportional to 129,373.58, 178,476.54 and 93,506.78

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Solution

The fourth proportional to 129,373.58, 178,476.54 and 93,506.78 is: 128,996.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,373.58 : 178,476.54 = 93,506.78 : x
  2. Step 2: Convert to fraction form
    129,373.58/178,476.54 = 93,506.78/x
  3. Step 3: Cross multiply
    129,373.58x = 178,476.54 × 93,506.78
  4. Step 4: Simplify right side
    129,373.58x = 16,688,766,560.94
  5. Step 5: Solve for x
    x = 16,688,766,560.94/129,373.58
  6. Step 6: Final answer
    x = 128,996.71

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1.5x scale

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.