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Finding the Fourth Proportional to 117,892.74, 176,821.56 and 42,995.28

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Solution

The fourth proportional to 117,892.74, 176,821.56 and 42,995.28 is: 64,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,892.74 : 176,821.56 = 42,995.28 : x
  2. Step 2: Convert to fraction form
    117,892.74/176,821.56 = 42,995.28/x
  3. Step 3: Cross multiply
    117,892.74x = 176,821.56 × 42,995.28
  4. Step 4: Simplify right side
    117,892.74x = 7,602,492,482.24
  5. Step 5: Solve for x
    x = 7,602,492,482.24/117,892.74
  6. Step 6: Final answer
    x = 64,486.52

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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.