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Finding the Fourth Proportional to 6,472,617.60, 9,708,926.40 and 4,457,078.40

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Solution

The fourth proportional to 6,472,617.60, 9,708,926.40 and 4,457,078.40 is: 6,685,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472,617.60 : 9,708,926.40 = 4,457,078.40 : x
  2. Step 2: Convert to fraction form
    6,472,617.60/9,708,926.40 = 4,457,078.40/x
  3. Step 3: Cross multiply
    6,472,617.60x = 9,708,926.40 × 4,457,078.40
  4. Step 4: Simplify right side
    6,472,617.60x = 43,273,446,144,629.77
  5. Step 5: Solve for x
    x = 43,273,446,144,629.77/6,472,617.60
  6. Step 6: Final answer
    x = 6,685,617.60

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Similar ratio
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1.5x scale

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.