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Finding the Fourth Proportional to 64,975.49, 89,663.55 and 36,294.69

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Solution

The fourth proportional to 64,975.49, 89,663.55 and 36,294.69 is: 50,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,975.49 : 89,663.55 = 36,294.69 : x
  2. Step 2: Convert to fraction form
    64,975.49/89,663.55 = 36,294.69/x
  3. Step 3: Cross multiply
    64,975.49x = 89,663.55 × 36,294.69
  4. Step 4: Simplify right side
    64,975.49x = 3,254,310,801.58
  5. Step 5: Solve for x
    x = 3,254,310,801.58/64,975.49
  6. Step 6: Final answer
    x = 50,085.20

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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.