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Finding the Fourth Proportional to 76,937.49, 106,191.45 and 45,116.64

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Solution

The fourth proportional to 76,937.49, 106,191.45 and 45,116.64 is: 62,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,937.49 : 106,191.45 = 45,116.64 : x
  2. Step 2: Convert to fraction form
    76,937.49/106,191.45 = 45,116.64/x
  3. Step 3: Cross multiply
    76,937.49x = 106,191.45 × 45,116.64
  4. Step 4: Simplify right side
    76,937.49x = 4,791,001,420.73
  5. Step 5: Solve for x
    x = 4,791,001,420.73/76,937.49
  6. Step 6: Final answer
    x = 62,271.35

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1.5x scale

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.