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Finding the Fourth Proportional to 371,605.91, 557,430.06 and 105,345.50

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Solution

The fourth proportional to 371,605.91, 557,430.06 and 105,345.50 is: 158,024.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,605.91 : 557,430.06 = 105,345.50 : x
  2. Step 2: Convert to fraction form
    371,605.91/557,430.06 = 105,345.50/x
  3. Step 3: Cross multiply
    371,605.91x = 557,430.06 × 105,345.50
  4. Step 4: Simplify right side
    371,605.91x = 58,722,748,385.73
  5. Step 5: Solve for x
    x = 58,722,748,385.73/371,605.91
  6. Step 6: Final answer
    x = 158,024.26

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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.