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Finding the Fourth Proportional to 78,646.61, 108,534.93 and 44,656.58

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Solution

The fourth proportional to 78,646.61, 108,534.93 and 44,656.58 is: 61,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,646.61 : 108,534.93 = 44,656.58 : x
  2. Step 2: Convert to fraction form
    78,646.61/108,534.93 = 44,656.58/x
  3. Step 3: Cross multiply
    78,646.61x = 108,534.93 × 44,656.58
  4. Step 4: Simplify right side
    78,646.61x = 4,846,798,784.34
  5. Step 5: Solve for x
    x = 4,846,798,784.34/78,646.61
  6. Step 6: Final answer
    x = 61,627.56

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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.