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Finding the Fourth Proportional to 207,590.40, 311,385.60 and 124,646.40

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Solution

The fourth proportional to 207,590.40, 311,385.60 and 124,646.40 is: 186,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,590.40 : 311,385.60 = 124,646.40 : x
  2. Step 2: Convert to fraction form
    207,590.40/311,385.60 = 124,646.40/x
  3. Step 3: Cross multiply
    207,590.40x = 311,385.60 × 124,646.40
  4. Step 4: Simplify right side
    207,590.40x = 38,813,094,051.84
  5. Step 5: Solve for x
    x = 38,813,094,051.84/207,590.40
  6. Step 6: Final answer
    x = 186,969.60

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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.