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Finding the Fourth Proportional to 630,989.64, 946,486.92 and 157,675.50

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Solution

The fourth proportional to 630,989.64, 946,486.92 and 157,675.50 is: 236,513.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,989.64 : 946,486.92 = 157,675.50 : x
  2. Step 2: Convert to fraction form
    630,989.64/946,486.92 = 157,675.50/x
  3. Step 3: Cross multiply
    630,989.64x = 946,486.92 × 157,675.50
  4. Step 4: Simplify right side
    630,989.64x = 149,237,798,354.46
  5. Step 5: Solve for x
    x = 149,237,798,354.46/630,989.64
  6. Step 6: Final answer
    x = 236,513.86

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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.