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Finding the Fourth Proportional to 61,206.60, 91,809.90 and 56,152.20

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Solution

The fourth proportional to 61,206.60, 91,809.90 and 56,152.20 is: 84,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,206.60 : 91,809.90 = 56,152.20 : x
  2. Step 2: Convert to fraction form
    61,206.60/91,809.90 = 56,152.20/x
  3. Step 3: Cross multiply
    61,206.60x = 91,809.90 × 56,152.20
  4. Step 4: Simplify right side
    61,206.60x = 5,155,327,866.78
  5. Step 5: Solve for x
    x = 5,155,327,866.78/61,206.60
  6. Step 6: Final answer
    x = 84,228.30

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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.