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Finding the Fourth Proportional to 191,485.81, 287,259.90 and 56,563.57

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Solution

The fourth proportional to 191,485.81, 287,259.90 and 56,563.57 is: 84,854.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,485.81 : 287,259.90 = 56,563.57 : x
  2. Step 2: Convert to fraction form
    191,485.81/287,259.90 = 56,563.57/x
  3. Step 3: Cross multiply
    191,485.81x = 287,259.90 × 56,563.57
  4. Step 4: Simplify right side
    191,485.81x = 16,248,445,461.84
  5. Step 5: Solve for x
    x = 16,248,445,461.84/191,485.81
  6. Step 6: Final answer
    x = 84,854.57

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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.