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Finding the Fourth Proportional to 86,398.95, 119,276.80 and 60,636.77

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Solution

The fourth proportional to 86,398.95, 119,276.80 and 60,636.77 is: 83,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,398.95 : 119,276.80 = 60,636.77 : x
  2. Step 2: Convert to fraction form
    86,398.95/119,276.80 = 60,636.77/x
  3. Step 3: Cross multiply
    86,398.95x = 119,276.80 × 60,636.77
  4. Step 4: Simplify right side
    86,398.95x = 7,232,559,887.94
  5. Step 5: Solve for x
    x = 7,232,559,887.94/86,398.95
  6. Step 6: Final answer
    x = 83,711.20

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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.