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Finding the Fourth Proportional to 93,449.61, 128,955.97 and 53,159.60

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Solution

The fourth proportional to 93,449.61, 128,955.97 and 53,159.60 is: 73,357.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,449.61 : 128,955.97 = 53,159.60 : x
  2. Step 2: Convert to fraction form
    93,449.61/128,955.97 = 53,159.60/x
  3. Step 3: Cross multiply
    93,449.61x = 128,955.97 × 53,159.60
  4. Step 4: Simplify right side
    93,449.61x = 6,855,247,782.81
  5. Step 5: Solve for x
    x = 6,855,247,782.81/93,449.61
  6. Step 6: Final answer
    x = 73,357.69

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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.