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Finding the Fourth Proportional to 438,976.80, 657,946.80 and 186,256.80

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Solution

The fourth proportional to 438,976.80, 657,946.80 and 186,256.80 is: 279,165.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,976.80 : 657,946.80 = 186,256.80 : x
  2. Step 2: Convert to fraction form
    438,976.80/657,946.80 = 186,256.80/x
  3. Step 3: Cross multiply
    438,976.80x = 657,946.80 × 186,256.80
  4. Step 4: Simplify right side
    438,976.80x = 122,547,065,538.24
  5. Step 5: Solve for x
    x = 122,547,065,538.24/438,976.80
  6. Step 6: Final answer
    x = 279,165.24

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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.