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Finding the Fourth Proportional to 210,957, 316,487.34 and 63,213

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Solution

The fourth proportional to 210,957, 316,487.34 and 63,213 is: 94,835.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,957 : 316,487.34 = 63,213 : x
  2. Step 2: Convert to fraction form
    210,957/316,487.34 = 63,213/x
  3. Step 3: Cross multiply
    210,957x = 316,487.34 × 63,213
  4. Step 4: Simplify right side
    210,957x = 20,006,114,223.42
  5. Step 5: Solve for x
    x = 20,006,114,223.42/210,957
  6. Step 6: Final answer
    x = 94,835.03

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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.