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Finding the Fourth Proportional to 386,761.60, 581,697.60 and 346,326.40

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Solution

The fourth proportional to 386,761.60, 581,697.60 and 346,326.40 is: 520,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,761.60 : 581,697.60 = 346,326.40 : x
  2. Step 2: Convert to fraction form
    386,761.60/581,697.60 = 346,326.40/x
  3. Step 3: Cross multiply
    386,761.60x = 581,697.60 × 346,326.40
  4. Step 4: Simplify right side
    386,761.60x = 201,457,235,696.64
  5. Step 5: Solve for x
    x = 201,457,235,696.64/386,761.60
  6. Step 6: Final answer
    x = 520,882.21

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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.