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Finding the Fourth Proportional to 78,645.61, 108,533.55 and 44,655.58

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Solution

The fourth proportional to 78,645.61, 108,533.55 and 44,655.58 is: 61,626.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,645.61 : 108,533.55 = 44,655.58 : x
  2. Step 2: Convert to fraction form
    78,645.61/108,533.55 = 44,655.58/x
  3. Step 3: Cross multiply
    78,645.61x = 108,533.55 × 44,655.58
  4. Step 4: Simplify right side
    78,645.61x = 4,846,628,624.71
  5. Step 5: Solve for x
    x = 4,846,628,624.71/78,645.61
  6. Step 6: Final answer
    x = 61,626.18

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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.