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Finding the Fourth Proportional to 105,117.65, 157,697.25 and 38,558.40

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Solution

The fourth proportional to 105,117.65, 157,697.25 and 38,558.40 is: 57,845.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,117.65 : 157,697.25 = 38,558.40 : x
  2. Step 2: Convert to fraction form
    105,117.65/157,697.25 = 38,558.40/x
  3. Step 3: Cross multiply
    105,117.65x = 157,697.25 × 38,558.40
  4. Step 4: Simplify right side
    105,117.65x = 6,080,552,908.44
  5. Step 5: Solve for x
    x = 6,080,552,908.44/105,117.65
  6. Step 6: Final answer
    x = 57,845.21

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1.5x scale

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.