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Finding the Fourth Proportional to 1,286,709, 1,930,063.56 and 881,501.64

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Solution

The fourth proportional to 1,286,709, 1,930,063.56 and 881,501.64 is: 1,322,252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,709 : 1,930,063.56 = 881,501.64 : x
  2. Step 2: Convert to fraction form
    1,286,709/1,930,063.56 = 881,501.64/x
  3. Step 3: Cross multiply
    1,286,709x = 1,930,063.56 × 881,501.64
  4. Step 4: Simplify right side
    1,286,709x = 1,701,354,193,444.24
  5. Step 5: Solve for x
    x = 1,701,354,193,444.24/1,286,709
  6. Step 6: Final answer
    x = 1,322,252.50

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Double scale
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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.