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Finding the Fourth Proportional to 111,195.49, 153,387.53 and 65,829.21

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Solution

The fourth proportional to 111,195.49, 153,387.53 and 65,829.21 is: 90,807.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,195.49 : 153,387.53 = 65,829.21 : x
  2. Step 2: Convert to fraction form
    111,195.49/153,387.53 = 65,829.21/x
  3. Step 3: Cross multiply
    111,195.49x = 153,387.53 × 65,829.21
  4. Step 4: Simplify right side
    111,195.49x = 10,097,379,594.61
  5. Step 5: Solve for x
    x = 10,097,379,594.61/111,195.49
  6. Step 6: Final answer
    x = 90,807.46

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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.