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Finding the Fourth Proportional to 86,774.69, 119,713.75 and 56,549.00

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Solution

The fourth proportional to 86,774.69, 119,713.75 and 56,549.00 is: 78,014.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,774.69 : 119,713.75 = 56,549.00 : x
  2. Step 2: Convert to fraction form
    86,774.69/119,713.75 = 56,549.00/x
  3. Step 3: Cross multiply
    86,774.69x = 119,713.75 × 56,549.00
  4. Step 4: Simplify right side
    86,774.69x = 6,769,693,006.66
  5. Step 5: Solve for x
    x = 6,769,693,006.66/86,774.69
  6. Step 6: Final answer
    x = 78,014.60

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1.5x scale

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.