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Finding the Fourth Proportional to 64,406.50, 88,880.92 and 39,256.00

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Solution

The fourth proportional to 64,406.50, 88,880.92 and 39,256.00 is: 54,173.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,406.50 : 88,880.92 = 39,256.00 : x
  2. Step 2: Convert to fraction form
    64,406.50/88,880.92 = 39,256.00/x
  3. Step 3: Cross multiply
    64,406.50x = 88,880.92 × 39,256.00
  4. Step 4: Simplify right side
    64,406.50x = 3,489,109,075.18
  5. Step 5: Solve for x
    x = 3,489,109,075.18/64,406.50
  6. Step 6: Final answer
    x = 54,173.25

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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.