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Finding the Fourth Proportional to 191,306.10, 286,959.15 and 161,781.60

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Solution

The fourth proportional to 191,306.10, 286,959.15 and 161,781.60 is: 242,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,306.10 : 286,959.15 = 161,781.60 : x
  2. Step 2: Convert to fraction form
    191,306.10/286,959.15 = 161,781.60/x
  3. Step 3: Cross multiply
    191,306.10x = 286,959.15 × 161,781.60
  4. Step 4: Simplify right side
    191,306.10x = 46,424,710,421.64
  5. Step 5: Solve for x
    x = 46,424,710,421.64/191,306.10
  6. Step 6: Final answer
    x = 242,672.40

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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.