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Finding the Fourth Proportional to 90,715.40, 136,073.10 and 27,535.40

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Solution

The fourth proportional to 90,715.40, 136,073.10 and 27,535.40 is: 41,303.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,715.40 : 136,073.10 = 27,535.40 : x
  2. Step 2: Convert to fraction form
    90,715.40/136,073.10 = 27,535.40/x
  3. Step 3: Cross multiply
    90,715.40x = 136,073.10 × 27,535.40
  4. Step 4: Simplify right side
    90,715.40x = 3,746,827,237.74
  5. Step 5: Solve for x
    x = 3,746,827,237.74/90,715.40
  6. Step 6: Final answer
    x = 41,303.10

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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.