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Finding the Fourth Proportional to 469,688.40, 704,570.58 and 132,731.76

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Solution

The fourth proportional to 469,688.40, 704,570.58 and 132,731.76 is: 199,108.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,688.40 : 704,570.58 = 132,731.76 : x
  2. Step 2: Convert to fraction form
    469,688.40/704,570.58 = 132,731.76/x
  3. Step 3: Cross multiply
    469,688.40x = 704,570.58 × 132,731.76
  4. Step 4: Simplify right side
    469,688.40x = 93,518,893,127.62
  5. Step 5: Solve for x
    x = 93,518,893,127.62/469,688.40
  6. Step 6: Final answer
    x = 199,108.37

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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.