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Finding the Fourth Proportional to 70,799.94, 97,706.52 and 38,970.18

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Solution

The fourth proportional to 70,799.94, 97,706.52 and 38,970.18 is: 53,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,799.94 : 97,706.52 = 38,970.18 : x
  2. Step 2: Convert to fraction form
    70,799.94/97,706.52 = 38,970.18/x
  3. Step 3: Cross multiply
    70,799.94x = 97,706.52 × 38,970.18
  4. Step 4: Simplify right side
    70,799.94x = 3,807,640,671.57
  5. Step 5: Solve for x
    x = 3,807,640,671.57/70,799.94
  6. Step 6: Final answer
    x = 53,780.28

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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.