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Finding the Fourth Proportional to 85,482.70, 117,966.49 and 46,721.30

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Solution

The fourth proportional to 85,482.70, 117,966.49 and 46,721.30 is: 64,475.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,482.70 : 117,966.49 = 46,721.30 : x
  2. Step 2: Convert to fraction form
    85,482.70/117,966.49 = 46,721.30/x
  3. Step 3: Cross multiply
    85,482.70x = 117,966.49 × 46,721.30
  4. Step 4: Simplify right side
    85,482.70x = 5,511,547,062.60
  5. Step 5: Solve for x
    x = 5,511,547,062.60/85,482.70
  6. Step 6: Final answer
    x = 64,475.59

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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.