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Finding the Fourth Proportional to 109,710.18, 151,392.12 and 64,389.96

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Solution

The fourth proportional to 109,710.18, 151,392.12 and 64,389.96 is: 88,853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,710.18 : 151,392.12 = 64,389.96 : x
  2. Step 2: Convert to fraction form
    109,710.18/151,392.12 = 64,389.96/x
  3. Step 3: Cross multiply
    109,710.18x = 151,392.12 × 64,389.96
  4. Step 4: Simplify right side
    109,710.18x = 9,748,132,551.12
  5. Step 5: Solve for x
    x = 9,748,132,551.12/109,710.18
  6. Step 6: Final answer
    x = 88,853.49

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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.