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Finding the Fourth Proportional to 657,203.10, 985,804.65 and 432,816.90

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Solution

The fourth proportional to 657,203.10, 985,804.65 and 432,816.90 is: 649,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,203.10 : 985,804.65 = 432,816.90 : x
  2. Step 2: Convert to fraction form
    657,203.10/985,804.65 = 432,816.90/x
  3. Step 3: Cross multiply
    657,203.10x = 985,804.65 × 432,816.90
  4. Step 4: Simplify right side
    657,203.10x = 426,672,912,618.59
  5. Step 5: Solve for x
    x = 426,672,912,618.59/657,203.10
  6. Step 6: Final answer
    x = 649,225.35

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Half scale
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Double scale
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Similar ratio
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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.