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Finding the Fourth Proportional to 58,461.96, 87,700.74 and 19,005.78

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Solution

The fourth proportional to 58,461.96, 87,700.74 and 19,005.78 is: 28,511.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,461.96 : 87,700.74 = 19,005.78 : x
  2. Step 2: Convert to fraction form
    58,461.96/87,700.74 = 19,005.78/x
  3. Step 3: Cross multiply
    58,461.96x = 87,700.74 × 19,005.78
  4. Step 4: Simplify right side
    58,461.96x = 1,666,820,970.28
  5. Step 5: Solve for x
    x = 1,666,820,970.28/58,461.96
  6. Step 6: Final answer
    x = 28,511.21

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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.