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Finding the Fourth Proportional to 93,419.62, 128,922.72 and 53,137.06

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Solution

The fourth proportional to 93,419.62, 128,922.72 and 53,137.06 is: 73,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,419.62 : 128,922.72 = 53,137.06 : x
  2. Step 2: Convert to fraction form
    93,419.62/128,922.72 = 53,137.06/x
  3. Step 3: Cross multiply
    93,419.62x = 128,922.72 × 53,137.06
  4. Step 4: Simplify right side
    93,419.62x = 6,850,574,308.00
  5. Step 5: Solve for x
    x = 6,850,574,308.00/93,419.62
  6. Step 6: Final answer
    x = 73,331.22

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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.