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Finding the Fourth Proportional to 186,590.64, 279,929.70 and 61,931.64

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Solution

The fourth proportional to 186,590.64, 279,929.70 and 61,931.64 is: 92,911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,590.64 : 279,929.70 = 61,931.64 : x
  2. Step 2: Convert to fraction form
    186,590.64/279,929.70 = 61,931.64/x
  3. Step 3: Cross multiply
    186,590.64x = 279,929.70 × 61,931.64
  4. Step 4: Simplify right side
    186,590.64x = 17,336,505,405.71
  5. Step 5: Solve for x
    x = 17,336,505,405.71/186,590.64
  6. Step 6: Final answer
    x = 92,911.98

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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.