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Finding the Fourth Proportional to 86,798.54, 119,755.40 and 56,572.89

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Solution

The fourth proportional to 86,798.54, 119,755.40 and 56,572.89 is: 78,053.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,798.54 : 119,755.40 = 56,572.89 : x
  2. Step 2: Convert to fraction form
    86,798.54/119,755.40 = 56,572.89/x
  3. Step 3: Cross multiply
    86,798.54x = 119,755.40 × 56,572.89
  4. Step 4: Simplify right side
    86,798.54x = 6,774,908,788.24
  5. Step 5: Solve for x
    x = 6,774,908,788.24/86,798.54
  6. Step 6: Final answer
    x = 78,053.26

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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.