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Finding the Fourth Proportional to 186,637.10, 279,955.65 and 61,978.10

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Solution

The fourth proportional to 186,637.10, 279,955.65 and 61,978.10 is: 92,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,637.10 : 279,955.65 = 61,978.10 : x
  2. Step 2: Convert to fraction form
    186,637.10/279,955.65 = 61,978.10/x
  3. Step 3: Cross multiply
    186,637.10x = 279,955.65 × 61,978.10
  4. Step 4: Simplify right side
    186,637.10x = 17,351,119,271.27
  5. Step 5: Solve for x
    x = 17,351,119,271.27/186,637.10
  6. Step 6: Final answer
    x = 92,967.15

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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.