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Finding the Fourth Proportional to 966,920.80, 1,355,088.80 and 966,920.80

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Solution

The fourth proportional to 966,920.80, 1,355,088.80 and 966,920.80 is: 1,355,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,920.80 : 1,355,088.80 = 966,920.80 : x
  2. Step 2: Convert to fraction form
    966,920.80/1,355,088.80 = 966,920.80/x
  3. Step 3: Cross multiply
    966,920.80x = 1,355,088.80 × 966,920.80
  4. Step 4: Simplify right side
    966,920.80x = 1,310,263,546,567.04
  5. Step 5: Solve for x
    x = 1,310,263,546,567.04/966,920.80
  6. Step 6: Final answer
    x = 1,355,088.80

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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.