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Finding the Fourth Proportional to 64,907.40, 89,572.16 and 35,099.40

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Solution

The fourth proportional to 64,907.40, 89,572.16 and 35,099.40 is: 48,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,907.40 : 89,572.16 = 35,099.40 : x
  2. Step 2: Convert to fraction form
    64,907.40/89,572.16 = 35,099.40/x
  3. Step 3: Cross multiply
    64,907.40x = 89,572.16 × 35,099.40
  4. Step 4: Simplify right side
    64,907.40x = 3,143,929,072.70
  5. Step 5: Solve for x
    x = 3,143,929,072.70/64,907.40
  6. Step 6: Final answer
    x = 48,437.14

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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.