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Finding the Fourth Proportional to 191,215.80, 286,823.70 and 147,065.40

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Solution

The fourth proportional to 191,215.80, 286,823.70 and 147,065.40 is: 220,598.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,215.80 : 286,823.70 = 147,065.40 : x
  2. Step 2: Convert to fraction form
    191,215.80/286,823.70 = 147,065.40/x
  3. Step 3: Cross multiply
    191,215.80x = 286,823.70 × 147,065.40
  4. Step 4: Simplify right side
    191,215.80x = 42,181,842,169.98
  5. Step 5: Solve for x
    x = 42,181,842,169.98/191,215.80
  6. Step 6: Final answer
    x = 220,598.10

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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.