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Finding the Fourth Proportional to 615,543.30, 922,877.55 and 278,745.30

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Solution

The fourth proportional to 615,543.30, 922,877.55 and 278,745.30 is: 417,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,543.30 : 922,877.55 = 278,745.30 : x
  2. Step 2: Convert to fraction form
    615,543.30/922,877.55 = 278,745.30/x
  3. Step 3: Cross multiply
    615,543.30x = 922,877.55 × 278,745.30
  4. Step 4: Simplify right side
    615,543.30x = 257,247,779,538.02
  5. Step 5: Solve for x
    x = 257,247,779,538.02/615,543.30
  6. Step 6: Final answer
    x = 417,919.88

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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.