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Finding the Fourth Proportional to 657,665.80, 918,632.60 and 657,665.80

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Solution

The fourth proportional to 657,665.80, 918,632.60 and 657,665.80 is: 918,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,665.80 : 918,632.60 = 657,665.80 : x
  2. Step 2: Convert to fraction form
    657,665.80/918,632.60 = 657,665.80/x
  3. Step 3: Cross multiply
    657,665.80x = 918,632.60 × 657,665.80
  4. Step 4: Simplify right side
    657,665.80x = 604,153,243,785.08
  5. Step 5: Solve for x
    x = 604,153,243,785.08/657,665.80
  6. Step 6: Final answer
    x = 918,632.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.