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Finding the Fourth Proportional to 980,814.60, 1,353,564 and 551,093.40

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Solution

The fourth proportional to 980,814.60, 1,353,564 and 551,093.40 is: 760,531.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,814.60 : 1,353,564 = 551,093.40 : x
  2. Step 2: Convert to fraction form
    980,814.60/1,353,564 = 551,093.40/x
  3. Step 3: Cross multiply
    980,814.60x = 1,353,564 × 551,093.40
  4. Step 4: Simplify right side
    980,814.60x = 745,940,186,877.60
  5. Step 5: Solve for x
    x = 745,940,186,877.60/980,814.60
  6. Step 6: Final answer
    x = 760,531.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.