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Finding the Fourth Proportional to 156,694.40, 235,063.20 and 56,830.40

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Solution

The fourth proportional to 156,694.40, 235,063.20 and 56,830.40 is: 85,253.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,694.40 : 235,063.20 = 56,830.40 : x
  2. Step 2: Convert to fraction form
    156,694.40/235,063.20 = 56,830.40/x
  3. Step 3: Cross multiply
    156,694.40x = 235,063.20 × 56,830.40
  4. Step 4: Simplify right side
    156,694.40x = 13,358,735,681.28
  5. Step 5: Solve for x
    x = 13,358,735,681.28/156,694.40
  6. Step 6: Final answer
    x = 85,253.43

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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.