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Finding the Fourth Proportional to 186,779.40, 280,169.10 and 127,730.40

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Solution

The fourth proportional to 186,779.40, 280,169.10 and 127,730.40 is: 191,595.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,779.40 : 280,169.10 = 127,730.40 : x
  2. Step 2: Convert to fraction form
    186,779.40/280,169.10 = 127,730.40/x
  3. Step 3: Cross multiply
    186,779.40x = 280,169.10 × 127,730.40
  4. Step 4: Simplify right side
    186,779.40x = 35,786,111,210.64
  5. Step 5: Solve for x
    x = 35,786,111,210.64/186,779.40
  6. Step 6: Final answer
    x = 191,595.60

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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.