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Finding the Fourth Proportional to 191,111.60, 286,667.40 and 57,985.40

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Solution

The fourth proportional to 191,111.60, 286,667.40 and 57,985.40 is: 86,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,111.60 : 286,667.40 = 57,985.40 : x
  2. Step 2: Convert to fraction form
    191,111.60/286,667.40 = 57,985.40/x
  3. Step 3: Cross multiply
    191,111.60x = 286,667.40 × 57,985.40
  4. Step 4: Simplify right side
    191,111.60x = 16,622,523,855.96
  5. Step 5: Solve for x
    x = 16,622,523,855.96/191,111.60
  6. Step 6: Final answer
    x = 86,978.10

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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.