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Finding the Fourth Proportional to 93,559, 129,074.77 and 57,686.74

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Solution

The fourth proportional to 93,559, 129,074.77 and 57,686.74 is: 79,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,559 : 129,074.77 = 57,686.74 : x
  2. Step 2: Convert to fraction form
    93,559/129,074.77 = 57,686.74/x
  3. Step 3: Cross multiply
    93,559x = 129,074.77 × 57,686.74
  4. Step 4: Simplify right side
    93,559x = 7,445,902,697.55
  5. Step 5: Solve for x
    x = 7,445,902,697.55/93,559
  6. Step 6: Final answer
    x = 79,585.10

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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.