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Finding the Fourth Proportional to 64,389.60, 96,670.80 and 41,061.60

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Solution

The fourth proportional to 64,389.60, 96,670.80 and 41,061.60 is: 61,647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,389.60 : 96,670.80 = 41,061.60 : x
  2. Step 2: Convert to fraction form
    64,389.60/96,670.80 = 41,061.60/x
  3. Step 3: Cross multiply
    64,389.60x = 96,670.80 × 41,061.60
  4. Step 4: Simplify right side
    64,389.60x = 3,969,457,721.28
  5. Step 5: Solve for x
    x = 3,969,457,721.28/64,389.60
  6. Step 6: Final answer
    x = 61,647.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.