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Finding the Fourth Proportional to 354,458.61, 531,473.72 and 141,259.32

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Solution

The fourth proportional to 354,458.61, 531,473.72 and 141,259.32 is: 211,803.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,458.61 : 531,473.72 = 141,259.32 : x
  2. Step 2: Convert to fraction form
    354,458.61/531,473.72 = 141,259.32/x
  3. Step 3: Cross multiply
    354,458.61x = 531,473.72 × 141,259.32
  4. Step 4: Simplify right side
    354,458.61x = 75,075,615,578.77
  5. Step 5: Solve for x
    x = 75,075,615,578.77/354,458.61
  6. Step 6: Final answer
    x = 211,803.62

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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.