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Finding the Fourth Proportional to 352,595.20, 528,838.80 and 115,938.40

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Solution

The fourth proportional to 352,595.20, 528,838.80 and 115,938.40 is: 173,889.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,595.20 : 528,838.80 = 115,938.40 : x
  2. Step 2: Convert to fraction form
    352,595.20/528,838.80 = 115,938.40/x
  3. Step 3: Cross multiply
    352,595.20x = 528,838.80 × 115,938.40
  4. Step 4: Simplify right side
    352,595.20x = 61,312,724,329.92
  5. Step 5: Solve for x
    x = 61,312,724,329.92/352,595.20
  6. Step 6: Final answer
    x = 173,889.84

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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.