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Finding the Fourth Proportional to 93,891.76, 129,574.20 and 53,612.08

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Solution

The fourth proportional to 93,891.76, 129,574.20 and 53,612.08 is: 73,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,891.76 : 129,574.20 = 53,612.08 : x
  2. Step 2: Convert to fraction form
    93,891.76/129,574.20 = 53,612.08/x
  3. Step 3: Cross multiply
    93,891.76x = 129,574.20 × 53,612.08
  4. Step 4: Simplify right side
    93,891.76x = 6,946,742,376.34
  5. Step 5: Solve for x
    x = 6,946,742,376.34/93,891.76
  6. Step 6: Final answer
    x = 73,986.71

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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.