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Finding the Fourth Proportional to 98,610.40, 136,084.08 and 56,166.40

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Solution

The fourth proportional to 98,610.40, 136,084.08 and 56,166.40 is: 77,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,610.40 : 136,084.08 = 56,166.40 : x
  2. Step 2: Convert to fraction form
    98,610.40/136,084.08 = 56,166.40/x
  3. Step 3: Cross multiply
    98,610.40x = 136,084.08 × 56,166.40
  4. Step 4: Simplify right side
    98,610.40x = 7,643,352,870.91
  5. Step 5: Solve for x
    x = 7,643,352,870.91/98,610.40
  6. Step 6: Final answer
    x = 77,510.62

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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.