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Finding the Fourth Proportional to 528,472, 792,790.56 and 173,405.28

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Solution

The fourth proportional to 528,472, 792,790.56 and 173,405.28 is: 260,135.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,472 : 792,790.56 = 173,405.28 : x
  2. Step 2: Convert to fraction form
    528,472/792,790.56 = 173,405.28/x
  3. Step 3: Cross multiply
    528,472x = 792,790.56 × 173,405.28
  4. Step 4: Simplify right side
    528,472x = 137,474,069,038.16
  5. Step 5: Solve for x
    x = 137,474,069,038.16/528,472
  6. Step 6: Final answer
    x = 260,135.01

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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.