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Finding the Fourth Proportional to 64,837.70, 97,256.55 and 64,428.10

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Solution

The fourth proportional to 64,837.70, 97,256.55 and 64,428.10 is: 96,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,837.70 : 97,256.55 = 64,428.10 : x
  2. Step 2: Convert to fraction form
    64,837.70/97,256.55 = 64,428.10/x
  3. Step 3: Cross multiply
    64,837.70x = 97,256.55 × 64,428.10
  4. Step 4: Simplify right side
    64,837.70x = 6,266,054,729.06
  5. Step 5: Solve for x
    x = 6,266,054,729.06/64,837.70
  6. Step 6: Final answer
    x = 96,642.15

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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.