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Finding the Fourth Proportional to 368,923.92, 553,330.80 and 102,656.64

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Solution

The fourth proportional to 368,923.92, 553,330.80 and 102,656.64 is: 153,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,923.92 : 553,330.80 = 102,656.64 : x
  2. Step 2: Convert to fraction form
    368,923.92/553,330.80 = 102,656.64/x
  3. Step 3: Cross multiply
    368,923.92x = 553,330.80 × 102,656.64
  4. Step 4: Simplify right side
    368,923.92x = 56,803,080,736.51
  5. Step 5: Solve for x
    x = 56,803,080,736.51/368,923.92
  6. Step 6: Final answer
    x = 153,969.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.