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Finding the Fourth Proportional to 571,091.79, 856,639.64 and 144,627.46

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Solution

The fourth proportional to 571,091.79, 856,639.64 and 144,627.46 is: 216,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,091.79 : 856,639.64 = 144,627.46 : x
  2. Step 2: Convert to fraction form
    571,091.79/856,639.64 = 144,627.46/x
  3. Step 3: Cross multiply
    571,091.79x = 856,639.64 × 144,627.46
  4. Step 4: Simplify right side
    571,091.79x = 123,893,615,268.51
  5. Step 5: Solve for x
    x = 123,893,615,268.51/571,091.79
  6. Step 6: Final answer
    x = 216,941.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.