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Finding the Fourth Proportional to 128,599.01, 177,513.21 and 104,684.16

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Solution

The fourth proportional to 128,599.01, 177,513.21 and 104,684.16 is: 144,502.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,599.01 : 177,513.21 = 104,684.16 : x
  2. Step 2: Convert to fraction form
    128,599.01/177,513.21 = 104,684.16/x
  3. Step 3: Cross multiply
    128,599.01x = 177,513.21 × 104,684.16
  4. Step 4: Simplify right side
    128,599.01x = 18,582,821,277.75
  5. Step 5: Solve for x
    x = 18,582,821,277.75/128,599.01
  6. Step 6: Final answer
    x = 144,502.06

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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.