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Finding the Fourth Proportional to 61,812.30, 86,624.70 and 61,812.30

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Solution

The fourth proportional to 61,812.30, 86,624.70 and 61,812.30 is: 86,624.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,812.30 : 86,624.70 = 61,812.30 : x
  2. Step 2: Convert to fraction form
    61,812.30/86,624.70 = 61,812.30/x
  3. Step 3: Cross multiply
    61,812.30x = 86,624.70 × 61,812.30
  4. Step 4: Simplify right side
    61,812.30x = 5,354,471,943.81
  5. Step 5: Solve for x
    x = 5,354,471,943.81/61,812.30
  6. Step 6: Final answer
    x = 86,624.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.