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Finding the Fourth Proportional to 113,047.88, 156,006.68 and 70,631.01

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Solution

The fourth proportional to 113,047.88, 156,006.68 and 70,631.01 is: 97,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,047.88 : 156,006.68 = 70,631.01 : x
  2. Step 2: Convert to fraction form
    113,047.88/156,006.68 = 70,631.01/x
  3. Step 3: Cross multiply
    113,047.88x = 156,006.68 × 70,631.01
  4. Step 4: Simplify right side
    113,047.88x = 11,018,909,021.99
  5. Step 5: Solve for x
    x = 11,018,909,021.99/113,047.88
  6. Step 6: Final answer
    x = 97,471.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.