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Finding the Fourth Proportional to 1,181,600, 1,630,599.72 and 645,056

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Solution

The fourth proportional to 1,181,600, 1,630,599.72 and 645,056 is: 890,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,600 : 1,630,599.72 = 645,056 : x
  2. Step 2: Convert to fraction form
    1,181,600/1,630,599.72 = 645,056/x
  3. Step 3: Cross multiply
    1,181,600x = 1,630,599.72 × 645,056
  4. Step 4: Simplify right side
    1,181,600x = 1,051,828,132,984.32
  5. Step 5: Solve for x
    x = 1,051,828,132,984.32/1,181,600
  6. Step 6: Final answer
    x = 890,172.76

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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.