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Finding the Fourth Proportional to 64,962.40, 89,689.80 and 53,054.32

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Solution

The fourth proportional to 64,962.40, 89,689.80 and 53,054.32 is: 73,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,962.40 : 89,689.80 = 53,054.32 : x
  2. Step 2: Convert to fraction form
    64,962.40/89,689.80 = 53,054.32/x
  3. Step 3: Cross multiply
    64,962.40x = 89,689.80 × 53,054.32
  4. Step 4: Simplify right side
    64,962.40x = 4,758,431,349.94
  5. Step 5: Solve for x
    x = 4,758,431,349.94/64,962.40
  6. Step 6: Final answer
    x = 73,249.01

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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.