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Finding the Fourth Proportional to 111,497.16, 153,826.36 and 66,140.40

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Solution

The fourth proportional to 111,497.16, 153,826.36 and 66,140.40 is: 91,250.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,497.16 : 153,826.36 = 66,140.40 : x
  2. Step 2: Convert to fraction form
    111,497.16/153,826.36 = 66,140.40/x
  3. Step 3: Cross multiply
    111,497.16x = 153,826.36 × 66,140.40
  4. Step 4: Simplify right side
    111,497.16x = 10,174,136,980.94
  5. Step 5: Solve for x
    x = 10,174,136,980.94/111,497.16
  6. Step 6: Final answer
    x = 91,250.19

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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.