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Finding the Fourth Proportional to 352,666.13, 528,999.19 and 103,348.13

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Solution

The fourth proportional to 352,666.13, 528,999.19 and 103,348.13 is: 155,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,666.13 : 528,999.19 = 103,348.13 : x
  2. Step 2: Convert to fraction form
    352,666.13/528,999.19 = 103,348.13/x
  3. Step 3: Cross multiply
    352,666.13x = 528,999.19 × 103,348.13
  4. Step 4: Simplify right side
    352,666.13x = 54,671,074,154.65
  5. Step 5: Solve for x
    x = 54,671,074,154.65/352,666.13
  6. Step 6: Final answer
    x = 155,022.19

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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.