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Finding the Fourth Proportional to 70,510.97, 97,303.47 and 38,679.59

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Solution

The fourth proportional to 70,510.97, 97,303.47 and 38,679.59 is: 53,376.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,510.97 : 97,303.47 = 38,679.59 : x
  2. Step 2: Convert to fraction form
    70,510.97/97,303.47 = 38,679.59/x
  3. Step 3: Cross multiply
    70,510.97x = 97,303.47 × 38,679.59
  4. Step 4: Simplify right side
    70,510.97x = 3,763,658,325.18
  5. Step 5: Solve for x
    x = 3,763,658,325.18/70,510.97
  6. Step 6: Final answer
    x = 53,376.92

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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.