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Finding the Fourth Proportional to 64,912.10, 97,368.15 and 20,552.45

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Solution

The fourth proportional to 64,912.10, 97,368.15 and 20,552.45 is: 30,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,912.10 : 97,368.15 = 20,552.45 : x
  2. Step 2: Convert to fraction form
    64,912.10/97,368.15 = 20,552.45/x
  3. Step 3: Cross multiply
    64,912.10x = 97,368.15 × 20,552.45
  4. Step 4: Simplify right side
    64,912.10x = 2,001,154,034.47
  5. Step 5: Solve for x
    x = 2,001,154,034.47/64,912.10
  6. Step 6: Final answer
    x = 30,828.68

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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.