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Finding the Fourth Proportional to 116,803.95, 161,259.47 and 76,587.87

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Solution

The fourth proportional to 116,803.95, 161,259.47 and 76,587.87 is: 105,737.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,803.95 : 161,259.47 = 76,587.87 : x
  2. Step 2: Convert to fraction form
    116,803.95/161,259.47 = 76,587.87/x
  3. Step 3: Cross multiply
    116,803.95x = 161,259.47 × 76,587.87
  4. Step 4: Simplify right side
    116,803.95x = 12,350,518,807.46
  5. Step 5: Solve for x
    x = 12,350,518,807.46/116,803.95
  6. Step 6: Final answer
    x = 105,737.17

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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.