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Finding the Fourth Proportional to 64,417.64, 89,018.34 and 48,474.32

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Solution

The fourth proportional to 64,417.64, 89,018.34 and 48,474.32 is: 66,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,417.64 : 89,018.34 = 48,474.32 : x
  2. Step 2: Convert to fraction form
    64,417.64/89,018.34 = 48,474.32/x
  3. Step 3: Cross multiply
    64,417.64x = 89,018.34 × 48,474.32
  4. Step 4: Simplify right side
    64,417.64x = 4,315,103,499.03
  5. Step 5: Solve for x
    x = 4,315,103,499.03/64,417.64
  6. Step 6: Final answer
    x = 66,986.36

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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.