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Finding the Fourth Proportional to 687,349.44, 1,031,041.44 and 188,712

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Solution

The fourth proportional to 687,349.44, 1,031,041.44 and 188,712 is: 283,072.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,349.44 : 1,031,041.44 = 188,712 : x
  2. Step 2: Convert to fraction form
    687,349.44/1,031,041.44 = 188,712/x
  3. Step 3: Cross multiply
    687,349.44x = 1,031,041.44 × 188,712
  4. Step 4: Simplify right side
    687,349.44x = 194,569,892,225.28
  5. Step 5: Solve for x
    x = 194,569,892,225.28/687,349.44
  6. Step 6: Final answer
    x = 283,072.74

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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.