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Finding the Fourth Proportional to 108,962.32, 163,437.72 and 64,008.40

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Solution

The fourth proportional to 108,962.32, 163,437.72 and 64,008.40 is: 96,009.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,962.32 : 163,437.72 = 64,008.40 : x
  2. Step 2: Convert to fraction form
    108,962.32/163,437.72 = 64,008.40/x
  3. Step 3: Cross multiply
    108,962.32x = 163,437.72 × 64,008.40
  4. Step 4: Simplify right side
    108,962.32x = 10,461,386,956.85
  5. Step 5: Solve for x
    x = 10,461,386,956.85/108,962.32
  6. Step 6: Final answer
    x = 96,009.22

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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.