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Finding the Fourth Proportional to 85,797.19, 118,360.07 and 53,983.63

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Solution

The fourth proportional to 85,797.19, 118,360.07 and 53,983.63 is: 74,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,797.19 : 118,360.07 = 53,983.63 : x
  2. Step 2: Convert to fraction form
    85,797.19/118,360.07 = 53,983.63/x
  3. Step 3: Cross multiply
    85,797.19x = 118,360.07 × 53,983.63
  4. Step 4: Simplify right side
    85,797.19x = 6,389,506,225.65
  5. Step 5: Solve for x
    x = 6,389,506,225.65/85,797.19
  6. Step 6: Final answer
    x = 74,472.21

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.