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Finding the Fourth Proportional to 528,807.72, 792,913.50 and 173,726.40

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Solution

The fourth proportional to 528,807.72, 792,913.50 and 173,726.40 is: 260,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,807.72 : 792,913.50 = 173,726.40 : x
  2. Step 2: Convert to fraction form
    528,807.72/792,913.50 = 173,726.40/x
  3. Step 3: Cross multiply
    528,807.72x = 792,913.50 × 173,726.40
  4. Step 4: Simplify right side
    528,807.72x = 137,750,007,866.40
  5. Step 5: Solve for x
    x = 137,750,007,866.40/528,807.72
  6. Step 6: Final answer
    x = 260,491.67

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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.