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Finding the Fourth Proportional to 92,974, 128,301.66 and 52,686.76

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Solution

The fourth proportional to 92,974, 128,301.66 and 52,686.76 is: 72,706.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,974 : 128,301.66 = 52,686.76 : x
  2. Step 2: Convert to fraction form
    92,974/128,301.66 = 52,686.76/x
  3. Step 3: Cross multiply
    92,974x = 128,301.66 × 52,686.76
  4. Step 4: Simplify right side
    92,974x = 6,759,798,768.02
  5. Step 5: Solve for x
    x = 6,759,798,768.02/92,974
  6. Step 6: Final answer
    x = 72,706.33

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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.