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Finding the Fourth Proportional to 109,312.84, 150,853.66 and 61,567.90

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Solution

The fourth proportional to 109,312.84, 150,853.66 and 61,567.90 is: 84,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,312.84 : 150,853.66 = 61,567.90 : x
  2. Step 2: Convert to fraction form
    109,312.84/150,853.66 = 61,567.90/x
  3. Step 3: Cross multiply
    109,312.84x = 150,853.66 × 61,567.90
  4. Step 4: Simplify right side
    109,312.84x = 9,287,742,522.46
  5. Step 5: Solve for x
    x = 9,287,742,522.46/109,312.84
  6. Step 6: Final answer
    x = 84,964.79

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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.