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Finding the Fourth Proportional to 104,312.71, 143,951.54 and 56,566.09

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Solution

The fourth proportional to 104,312.71, 143,951.54 and 56,566.09 is: 78,061.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,312.71 : 143,951.54 = 56,566.09 : x
  2. Step 2: Convert to fraction form
    104,312.71/143,951.54 = 56,566.09/x
  3. Step 3: Cross multiply
    104,312.71x = 143,951.54 × 56,566.09
  4. Step 4: Simplify right side
    104,312.71x = 8,142,775,484.45
  5. Step 5: Solve for x
    x = 8,142,775,484.45/104,312.71
  6. Step 6: Final answer
    x = 78,061.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.