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Finding the Fourth Proportional to 290,434.40, 435,651.60 and 190,901.60

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Solution

The fourth proportional to 290,434.40, 435,651.60 and 190,901.60 is: 286,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,434.40 : 435,651.60 = 190,901.60 : x
  2. Step 2: Convert to fraction form
    290,434.40/435,651.60 = 190,901.60/x
  3. Step 3: Cross multiply
    290,434.40x = 435,651.60 × 190,901.60
  4. Step 4: Simplify right side
    290,434.40x = 83,166,587,482.56
  5. Step 5: Solve for x
    x = 83,166,587,482.56/290,434.40
  6. Step 6: Final answer
    x = 286,352.40

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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.