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Finding the Fourth Proportional to 85,699.44, 128,585.48 and 46,210.46

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Solution

The fourth proportional to 85,699.44, 128,585.48 and 46,210.46 is: 69,335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,699.44 : 128,585.48 = 46,210.46 : x
  2. Step 2: Convert to fraction form
    85,699.44/128,585.48 = 46,210.46/x
  3. Step 3: Cross multiply
    85,699.44x = 128,585.48 × 46,210.46
  4. Step 4: Simplify right side
    85,699.44x = 5,941,993,306.14
  5. Step 5: Solve for x
    x = 5,941,993,306.14/85,699.44
  6. Step 6: Final answer
    x = 69,335.26

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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.