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Finding the Fourth Proportional to 78,445.94, 108,260.55 and 44,454.29

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Solution

The fourth proportional to 78,445.94, 108,260.55 and 44,454.29 is: 61,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,445.94 : 108,260.55 = 44,454.29 : x
  2. Step 2: Convert to fraction form
    78,445.94/108,260.55 = 44,454.29/x
  3. Step 3: Cross multiply
    78,445.94x = 108,260.55 × 44,454.29
  4. Step 4: Simplify right side
    78,445.94x = 4,812,645,343.96
  5. Step 5: Solve for x
    x = 4,812,645,343.96/78,445.94
  6. Step 6: Final answer
    x = 61,349.84

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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.