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Finding the Fourth Proportional to 622,656.40, 933,984.60 and 543,924.40

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Solution

The fourth proportional to 622,656.40, 933,984.60 and 543,924.40 is: 815,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,656.40 : 933,984.60 = 543,924.40 : x
  2. Step 2: Convert to fraction form
    622,656.40/933,984.60 = 543,924.40/x
  3. Step 3: Cross multiply
    622,656.40x = 933,984.60 × 543,924.40
  4. Step 4: Simplify right side
    622,656.40x = 508,017,013,164.24
  5. Step 5: Solve for x
    x = 508,017,013,164.24/622,656.40
  6. Step 6: Final answer
    x = 815,886.60

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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.