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Finding the Fourth Proportional to 86,236.98, 129,502.62 and 46,870.98

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Solution

The fourth proportional to 86,236.98, 129,502.62 and 46,870.98 is: 70,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,236.98 : 129,502.62 = 46,870.98 : x
  2. Step 2: Convert to fraction form
    86,236.98/129,502.62 = 46,870.98/x
  3. Step 3: Cross multiply
    86,236.98x = 129,502.62 × 46,870.98
  4. Step 4: Simplify right side
    86,236.98x = 6,069,914,711.97
  5. Step 5: Solve for x
    x = 6,069,914,711.97/86,236.98
  6. Step 6: Final answer
    x = 70,386.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.