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Finding the Fourth Proportional to 64,763.88, 89,412.84 and 46,840.20

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Solution

The fourth proportional to 64,763.88, 89,412.84 and 46,840.20 is: 64,667.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,763.88 : 89,412.84 = 46,840.20 : x
  2. Step 2: Convert to fraction form
    64,763.88/89,412.84 = 46,840.20/x
  3. Step 3: Cross multiply
    64,763.88x = 89,412.84 × 46,840.20
  4. Step 4: Simplify right side
    64,763.88x = 4,188,115,308.17
  5. Step 5: Solve for x
    x = 4,188,115,308.17/64,763.88
  6. Step 6: Final answer
    x = 64,667.46

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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.