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Finding the Fourth Proportional to 926,836.20, 1,294,421.40 and 926,836.20

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Solution

The fourth proportional to 926,836.20, 1,294,421.40 and 926,836.20 is: 1,294,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,836.20 : 1,294,421.40 = 926,836.20 : x
  2. Step 2: Convert to fraction form
    926,836.20/1,294,421.40 = 926,836.20/x
  3. Step 3: Cross multiply
    926,836.20x = 1,294,421.40 × 926,836.20
  4. Step 4: Simplify right side
    926,836.20x = 1,199,716,611,574.68
  5. Step 5: Solve for x
    x = 1,199,716,611,574.68/926,836.20
  6. Step 6: Final answer
    x = 1,294,421.40

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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.