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Finding the Fourth Proportional to 115,803.95, 159,812.28 and 64,816.25

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Solution

The fourth proportional to 115,803.95, 159,812.28 and 64,816.25 is: 89,448.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,803.95 : 159,812.28 = 64,816.25 : x
  2. Step 2: Convert to fraction form
    115,803.95/159,812.28 = 64,816.25/x
  3. Step 3: Cross multiply
    115,803.95x = 159,812.28 × 64,816.25
  4. Step 4: Simplify right side
    115,803.95x = 10,358,431,894.49
  5. Step 5: Solve for x
    x = 10,358,431,894.49/115,803.95
  6. Step 6: Final answer
    x = 89,448.01

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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.