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Finding the Fourth Proportional to 170,641, 235,455.42 and 99,004.60

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Solution

The fourth proportional to 170,641, 235,455.42 and 99,004.60 is: 136,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,641 : 235,455.42 = 99,004.60 : x
  2. Step 2: Convert to fraction form
    170,641/235,455.42 = 99,004.60/x
  3. Step 3: Cross multiply
    170,641x = 235,455.42 × 99,004.60
  4. Step 4: Simplify right side
    170,641x = 23,311,169,674.93
  5. Step 5: Solve for x
    x = 23,311,169,674.93/170,641
  6. Step 6: Final answer
    x = 136,609.43

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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.