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Finding the Fourth Proportional to 64,959.19, 89,643.69 and 36,666.70

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Solution

The fourth proportional to 64,959.19, 89,643.69 and 36,666.70 is: 50,600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959.19 : 89,643.69 = 36,666.70 : x
  2. Step 2: Convert to fraction form
    64,959.19/89,643.69 = 36,666.70/x
  3. Step 3: Cross multiply
    64,959.19x = 89,643.69 × 36,666.70
  4. Step 4: Simplify right side
    64,959.19x = 3,286,938,064.01
  5. Step 5: Solve for x
    x = 3,286,938,064.01/64,959.19
  6. Step 6: Final answer
    x = 50,600.05

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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.