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Finding the Fourth Proportional to 115,916.40, 174,263.40 and 98,809.20

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Solution

The fourth proportional to 115,916.40, 174,263.40 and 98,809.20 is: 148,545.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,916.40 : 174,263.40 = 98,809.20 : x
  2. Step 2: Convert to fraction form
    115,916.40/174,263.40 = 98,809.20/x
  3. Step 3: Cross multiply
    115,916.40x = 174,263.40 × 98,809.20
  4. Step 4: Simplify right side
    115,916.40x = 17,218,827,143.28
  5. Step 5: Solve for x
    x = 17,218,827,143.28/115,916.40
  6. Step 6: Final answer
    x = 148,545.22

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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.