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Finding the Fourth Proportional to 191,700.80, 287,551.20 and 97,222.40

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Solution

The fourth proportional to 191,700.80, 287,551.20 and 97,222.40 is: 145,833.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,700.80 : 287,551.20 = 97,222.40 : x
  2. Step 2: Convert to fraction form
    191,700.80/287,551.20 = 97,222.40/x
  3. Step 3: Cross multiply
    191,700.80x = 287,551.20 × 97,222.40
  4. Step 4: Simplify right side
    191,700.80x = 27,956,417,786.88
  5. Step 5: Solve for x
    x = 27,956,417,786.88/191,700.80
  6. Step 6: Final answer
    x = 145,833.60

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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.