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Finding the Fourth Proportional to 91,362.48, 125,937.28 and 84,030.88

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Solution

The fourth proportional to 91,362.48, 125,937.28 and 84,030.88 is: 115,831.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,362.48 : 125,937.28 = 84,030.88 : x
  2. Step 2: Convert to fraction form
    91,362.48/125,937.28 = 84,030.88/x
  3. Step 3: Cross multiply
    91,362.48x = 125,937.28 × 84,030.88
  4. Step 4: Simplify right side
    91,362.48x = 10,582,620,463.21
  5. Step 5: Solve for x
    x = 10,582,620,463.21/91,362.48
  6. Step 6: Final answer
    x = 115,831.14

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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.