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Finding the Fourth Proportional to 176,686.90, 264,641.55 and 156,987.70

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Solution

The fourth proportional to 176,686.90, 264,641.55 and 156,987.70 is: 235,136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,686.90 : 264,641.55 = 156,987.70 : x
  2. Step 2: Convert to fraction form
    176,686.90/264,641.55 = 156,987.70/x
  3. Step 3: Cross multiply
    176,686.90x = 264,641.55 × 156,987.70
  4. Step 4: Simplify right side
    176,686.90x = 41,545,468,258.94
  5. Step 5: Solve for x
    x = 41,545,468,258.94/176,686.90
  6. Step 6: Final answer
    x = 235,136.10

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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.