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Finding the Fourth Proportional to 1,318,328, 1,819,292.64 and 714,716

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Solution

The fourth proportional to 1,318,328, 1,819,292.64 and 714,716 is: 986,308.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,328 : 1,819,292.64 = 714,716 : x
  2. Step 2: Convert to fraction form
    1,318,328/1,819,292.64 = 714,716/x
  3. Step 3: Cross multiply
    1,318,328x = 1,819,292.64 × 714,716
  4. Step 4: Simplify right side
    1,318,328x = 1,300,277,558,490.24
  5. Step 5: Solve for x
    x = 1,300,277,558,490.24/1,318,328
  6. Step 6: Final answer
    x = 986,308.08

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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.