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Finding the Fourth Proportional to 70,948.53, 97,908.86 and 39,117.51

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Solution

The fourth proportional to 70,948.53, 97,908.86 and 39,117.51 is: 53,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,948.53 : 97,908.86 = 39,117.51 : x
  2. Step 2: Convert to fraction form
    70,948.53/97,908.86 = 39,117.51/x
  3. Step 3: Cross multiply
    70,948.53x = 97,908.86 × 39,117.51
  4. Step 4: Simplify right side
    70,948.53x = 3,829,950,907.93
  5. Step 5: Solve for x
    x = 3,829,950,907.93/70,948.53
  6. Step 6: Final answer
    x = 53,982.10

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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.