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Finding the Fourth Proportional to 258,707.04, 388,060.66 and 116,386.08

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Solution

The fourth proportional to 258,707.04, 388,060.66 and 116,386.08 is: 174,579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,707.04 : 388,060.66 = 116,386.08 : x
  2. Step 2: Convert to fraction form
    258,707.04/388,060.66 = 116,386.08/x
  3. Step 3: Cross multiply
    258,707.04x = 388,060.66 × 116,386.08
  4. Step 4: Simplify right side
    258,707.04x = 45,164,859,019.61
  5. Step 5: Solve for x
    x = 45,164,859,019.61/258,707.04
  6. Step 6: Final answer
    x = 174,579.16

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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.