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Finding the Fourth Proportional to 117,905.40, 176,858.10 and 70,666.20

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Solution

The fourth proportional to 117,905.40, 176,858.10 and 70,666.20 is: 105,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,905.40 : 176,858.10 = 70,666.20 : x
  2. Step 2: Convert to fraction form
    117,905.40/176,858.10 = 70,666.20/x
  3. Step 3: Cross multiply
    117,905.40x = 176,858.10 × 70,666.20
  4. Step 4: Simplify right side
    117,905.40x = 12,497,889,866.22
  5. Step 5: Solve for x
    x = 12,497,889,866.22/117,905.40
  6. Step 6: Final answer
    x = 105,999.30

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1.5x scale

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.