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Finding the Fourth Proportional to 191,311.60, 286,837.80 and 97,740.40

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Solution

The fourth proportional to 191,311.60, 286,837.80 and 97,740.40 is: 146,544.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,311.60 : 286,837.80 = 97,740.40 : x
  2. Step 2: Convert to fraction form
    191,311.60/286,837.80 = 97,740.40/x
  3. Step 3: Cross multiply
    191,311.60x = 286,837.80 × 97,740.40
  4. Step 4: Simplify right side
    191,311.60x = 28,035,641,307.12
  5. Step 5: Solve for x
    x = 28,035,641,307.12/191,311.60
  6. Step 6: Final answer
    x = 146,544.39

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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.