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Finding the Fourth Proportional to 531,405.09, 797,108.20 and 132,045.86

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Solution

The fourth proportional to 531,405.09, 797,108.20 and 132,045.86 is: 198,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,405.09 : 797,108.20 = 132,045.86 : x
  2. Step 2: Convert to fraction form
    531,405.09/797,108.20 = 132,045.86/x
  3. Step 3: Cross multiply
    531,405.09x = 797,108.20 × 132,045.86
  4. Step 4: Simplify right side
    531,405.09x = 105,254,833,136.28
  5. Step 5: Solve for x
    x = 105,254,833,136.28/531,405.09
  6. Step 6: Final answer
    x = 198,068.92

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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.