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Finding the Fourth Proportional to 630,893.79, 870,632.58 and 404,538.75

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Solution

The fourth proportional to 630,893.79, 870,632.58 and 404,538.75 is: 558,262.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,893.79 : 870,632.58 = 404,538.75 : x
  2. Step 2: Convert to fraction form
    630,893.79/870,632.58 = 404,538.75/x
  3. Step 3: Cross multiply
    630,893.79x = 870,632.58 × 404,538.75
  4. Step 4: Simplify right side
    630,893.79x = 352,204,615,622.48
  5. Step 5: Solve for x
    x = 352,204,615,622.48/630,893.79
  6. Step 6: Final answer
    x = 558,262.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.