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Finding the Fourth Proportional to 70,762.59, 97,653.90 and 38,931.51

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Solution

The fourth proportional to 70,762.59, 97,653.90 and 38,931.51 is: 53,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,762.59 : 97,653.90 = 38,931.51 : x
  2. Step 2: Convert to fraction form
    70,762.59/97,653.90 = 38,931.51/x
  3. Step 3: Cross multiply
    70,762.59x = 97,653.90 × 38,931.51
  4. Step 4: Simplify right side
    70,762.59x = 3,801,813,784.39
  5. Step 5: Solve for x
    x = 3,801,813,784.39/70,762.59
  6. Step 6: Final answer
    x = 53,726.32

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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.