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Finding the Fourth Proportional to 983,426.40, 1,472,515.20 and 983,426.40

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Solution

The fourth proportional to 983,426.40, 1,472,515.20 and 983,426.40 is: 1,472,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,426.40 : 1,472,515.20 = 983,426.40 : x
  2. Step 2: Convert to fraction form
    983,426.40/1,472,515.20 = 983,426.40/x
  3. Step 3: Cross multiply
    983,426.40x = 1,472,515.20 × 983,426.40
  4. Step 4: Simplify right side
    983,426.40x = 1,448,110,322,081.28
  5. Step 5: Solve for x
    x = 1,448,110,322,081.28/983,426.40
  6. Step 6: Final answer
    x = 1,472,515.20

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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.