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Finding the Fourth Proportional to 191,010.40, 286,437.84 and 85,801.12

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Solution

The fourth proportional to 191,010.40, 286,437.84 and 85,801.12 is: 128,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,010.40 : 286,437.84 = 85,801.12 : x
  2. Step 2: Convert to fraction form
    191,010.40/286,437.84 = 85,801.12/x
  3. Step 3: Cross multiply
    191,010.40x = 286,437.84 × 85,801.12
  4. Step 4: Simplify right side
    191,010.40x = 24,576,687,482.38
  5. Step 5: Solve for x
    x = 24,576,687,482.38/191,010.40
  6. Step 6: Final answer
    x = 128,666.75

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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.