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Finding the Fourth Proportional to 93,509.90, 129,041.61 and 51,068.60

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Solution

The fourth proportional to 93,509.90, 129,041.61 and 51,068.60 is: 70,473.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,509.90 : 129,041.61 = 51,068.60 : x
  2. Step 2: Convert to fraction form
    93,509.90/129,041.61 = 51,068.60/x
  3. Step 3: Cross multiply
    93,509.90x = 129,041.61 × 51,068.60
  4. Step 4: Simplify right side
    93,509.90x = 6,589,974,364.45
  5. Step 5: Solve for x
    x = 6,589,974,364.45/93,509.90
  6. Step 6: Final answer
    x = 70,473.55

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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.