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Finding the Fourth Proportional to 70,647.45, 97,498.25 and 38,816.74

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Solution

The fourth proportional to 70,647.45, 97,498.25 and 38,816.74 is: 53,569.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,647.45 : 97,498.25 = 38,816.74 : x
  2. Step 2: Convert to fraction form
    70,647.45/97,498.25 = 38,816.74/x
  3. Step 3: Cross multiply
    70,647.45x = 97,498.25 × 38,816.74
  4. Step 4: Simplify right side
    70,647.45x = 3,784,564,220.71
  5. Step 5: Solve for x
    x = 3,784,564,220.71/70,647.45
  6. Step 6: Final answer
    x = 53,569.72

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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.