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Finding the Fourth Proportional to 436,897.60, 655,346.40 and 121,357.60

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Solution

The fourth proportional to 436,897.60, 655,346.40 and 121,357.60 is: 182,036.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,897.60 : 655,346.40 = 121,357.60 : x
  2. Step 2: Convert to fraction form
    436,897.60/655,346.40 = 121,357.60/x
  3. Step 3: Cross multiply
    436,897.60x = 655,346.40 × 121,357.60
  4. Step 4: Simplify right side
    436,897.60x = 79,531,266,272.64
  5. Step 5: Solve for x
    x = 79,531,266,272.64/436,897.60
  6. Step 6: Final answer
    x = 182,036.40

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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.