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Finding the Fourth Proportional to 352,484.48, 528,293.68 and 139,038.14

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Solution

The fourth proportional to 352,484.48, 528,293.68 and 139,038.14 is: 208,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,484.48 : 528,293.68 = 139,038.14 : x
  2. Step 2: Convert to fraction form
    352,484.48/528,293.68 = 139,038.14/x
  3. Step 3: Cross multiply
    352,484.48x = 528,293.68 × 139,038.14
  4. Step 4: Simplify right side
    352,484.48x = 73,452,970,640.96
  5. Step 5: Solve for x
    x = 73,452,970,640.96/352,484.48
  6. Step 6: Final answer
    x = 208,386.40

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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.