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Finding the Fourth Proportional to 91,205.55, 127,392.53 and 91,205.55

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Solution

The fourth proportional to 91,205.55, 127,392.53 and 91,205.55 is: 127,392.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,205.55 : 127,392.53 = 91,205.55 : x
  2. Step 2: Convert to fraction form
    91,205.55/127,392.53 = 91,205.55/x
  3. Step 3: Cross multiply
    91,205.55x = 127,392.53 × 91,205.55
  4. Step 4: Simplify right side
    91,205.55x = 11,618,905,308.51
  5. Step 5: Solve for x
    x = 11,618,905,308.51/91,205.55
  6. Step 6: Final answer
    x = 127,392.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.