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Finding the Fourth Proportional to 93,458.26, 128,970.39 and 51,017.50

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Solution

The fourth proportional to 93,458.26, 128,970.39 and 51,017.50 is: 70,403.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,458.26 : 128,970.39 = 51,017.50 : x
  2. Step 2: Convert to fraction form
    93,458.26/128,970.39 = 51,017.50/x
  3. Step 3: Cross multiply
    93,458.26x = 128,970.39 × 51,017.50
  4. Step 4: Simplify right side
    93,458.26x = 6,579,746,871.83
  5. Step 5: Solve for x
    x = 6,579,746,871.83/93,458.26
  6. Step 6: Final answer
    x = 70,403.05

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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.