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Finding the Fourth Proportional to 62,624.64, 86,430.90 and 38,759

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Solution

The fourth proportional to 62,624.64, 86,430.90 and 38,759 is: 53,492.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,624.64 : 86,430.90 = 38,759 : x
  2. Step 2: Convert to fraction form
    62,624.64/86,430.90 = 38,759/x
  3. Step 3: Cross multiply
    62,624.64x = 86,430.90 × 38,759
  4. Step 4: Simplify right side
    62,624.64x = 3,349,975,253.10
  5. Step 5: Solve for x
    x = 3,349,975,253.10/62,624.64
  6. Step 6: Final answer
    x = 53,492.93

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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.