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Finding the Fourth Proportional to 111,969.24, 154,510.48 and 61,668.24

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Solution

The fourth proportional to 111,969.24, 154,510.48 and 61,668.24 is: 85,098.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,969.24 : 154,510.48 = 61,668.24 : x
  2. Step 2: Convert to fraction form
    111,969.24/154,510.48 = 61,668.24/x
  3. Step 3: Cross multiply
    111,969.24x = 154,510.48 × 61,668.24
  4. Step 4: Simplify right side
    111,969.24x = 9,528,389,363.16
  5. Step 5: Solve for x
    x = 9,528,389,363.16/111,969.24
  6. Step 6: Final answer
    x = 85,098.28

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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.