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Finding the Fourth Proportional to 455,663.20, 684,661.20 and 404,341.60

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Solution

The fourth proportional to 455,663.20, 684,661.20 and 404,341.60 is: 607,547.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,663.20 : 684,661.20 = 404,341.60 : x
  2. Step 2: Convert to fraction form
    455,663.20/684,661.20 = 404,341.60/x
  3. Step 3: Cross multiply
    455,663.20x = 684,661.20 × 404,341.60
  4. Step 4: Simplify right side
    455,663.20x = 276,837,005,065.92
  5. Step 5: Solve for x
    x = 276,837,005,065.92/455,663.20
  6. Step 6: Final answer
    x = 607,547.43

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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.