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Finding the Fourth Proportional to 127,397.69, 175,811.05 and 70,039.43

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Solution

The fourth proportional to 127,397.69, 175,811.05 and 70,039.43 is: 96,655.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,397.69 : 175,811.05 = 70,039.43 : x
  2. Step 2: Convert to fraction form
    127,397.69/175,811.05 = 70,039.43/x
  3. Step 3: Cross multiply
    127,397.69x = 175,811.05 × 70,039.43
  4. Step 4: Simplify right side
    127,397.69x = 12,313,704,675.55
  5. Step 5: Solve for x
    x = 12,313,704,675.55/127,397.69
  6. Step 6: Final answer
    x = 96,655.64

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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.