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Finding the Fourth Proportional to 315,701.19, 473,555.89 and 105,339.13

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Solution

The fourth proportional to 315,701.19, 473,555.89 and 105,339.13 is: 158,010.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,701.19 : 473,555.89 = 105,339.13 : x
  2. Step 2: Convert to fraction form
    315,701.19/473,555.89 = 105,339.13/x
  3. Step 3: Cross multiply
    315,701.19x = 473,555.89 × 105,339.13
  4. Step 4: Simplify right side
    315,701.19x = 49,883,964,011.74
  5. Step 5: Solve for x
    x = 49,883,964,011.74/315,701.19
  6. Step 6: Final answer
    x = 158,010.06

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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.