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Finding the Fourth Proportional to 289,019.01, 398,980.14 and 168,116.25

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Solution

The fourth proportional to 289,019.01, 398,980.14 and 168,116.25 is: 232,078.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,019.01 : 398,980.14 = 168,116.25 : x
  2. Step 2: Convert to fraction form
    289,019.01/398,980.14 = 168,116.25/x
  3. Step 3: Cross multiply
    289,019.01x = 398,980.14 × 168,116.25
  4. Step 4: Simplify right side
    289,019.01x = 67,075,044,961.28
  5. Step 5: Solve for x
    x = 67,075,044,961.28/289,019.01
  6. Step 6: Final answer
    x = 232,078.32

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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.