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Finding the Fourth Proportional to 621,277.81, 857,652.24 and 468,378.16

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Solution

The fourth proportional to 621,277.81, 857,652.24 and 468,378.16 is: 646,579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,277.81 : 857,652.24 = 468,378.16 : x
  2. Step 2: Convert to fraction form
    621,277.81/857,652.24 = 468,378.16/x
  3. Step 3: Cross multiply
    621,277.81x = 857,652.24 × 468,378.16
  4. Step 4: Simplify right side
    621,277.81x = 401,705,578,091.08
  5. Step 5: Solve for x
    x = 401,705,578,091.08/621,277.81
  6. Step 6: Final answer
    x = 646,579.63

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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.