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Finding the Fourth Proportional to 113,574, 156,732.12 and 63,271.92

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Solution

The fourth proportional to 113,574, 156,732.12 and 63,271.92 is: 87,315.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,574 : 156,732.12 = 63,271.92 : x
  2. Step 2: Convert to fraction form
    113,574/156,732.12 = 63,271.92/x
  3. Step 3: Cross multiply
    113,574x = 156,732.12 × 63,271.92
  4. Step 4: Simplify right side
    113,574x = 9,916,742,158.07
  5. Step 5: Solve for x
    x = 9,916,742,158.07/113,574
  6. Step 6: Final answer
    x = 87,315.25

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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.