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Finding the Fourth Proportional to 7,886,246.40, 11,070,604.80 and 7,886,246.40

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Solution

The fourth proportional to 7,886,246.40, 11,070,604.80 and 7,886,246.40 is: 11,070,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886,246.40 : 11,070,604.80 = 7,886,246.40 : x
  2. Step 2: Convert to fraction form
    7,886,246.40/11,070,604.80 = 7,886,246.40/x
  3. Step 3: Cross multiply
    7,886,246.40x = 11,070,604.80 × 7,886,246.40
  4. Step 4: Simplify right side
    7,886,246.40x = 87,305,517,249,822.73
  5. Step 5: Solve for x
    x = 87,305,517,249,822.73/7,886,246.40
  6. Step 6: Final answer
    x = 11,070,604.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.