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Finding the Fourth Proportional to 620,955.01, 856,890.60 and 362,856.21

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Solution

The fourth proportional to 620,955.01, 856,890.60 and 362,856.21 is: 500,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,955.01 : 856,890.60 = 362,856.21 : x
  2. Step 2: Convert to fraction form
    620,955.01/856,890.60 = 362,856.21/x
  3. Step 3: Cross multiply
    620,955.01x = 856,890.60 × 362,856.21
  4. Step 4: Simplify right side
    620,955.01x = 310,928,070,926.58
  5. Step 5: Solve for x
    x = 310,928,070,926.58/620,955.01
  6. Step 6: Final answer
    x = 500,725.60

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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.