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Finding the Fourth Proportional to 191,703.60, 287,555.40 and 121,892.40

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Solution

The fourth proportional to 191,703.60, 287,555.40 and 121,892.40 is: 182,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,703.60 : 287,555.40 = 121,892.40 : x
  2. Step 2: Convert to fraction form
    191,703.60/287,555.40 = 121,892.40/x
  3. Step 3: Cross multiply
    191,703.60x = 287,555.40 × 121,892.40
  4. Step 4: Simplify right side
    191,703.60x = 35,050,817,838.96
  5. Step 5: Solve for x
    x = 35,050,817,838.96/191,703.60
  6. Step 6: Final answer
    x = 182,838.60

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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.