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Finding the Fourth Proportional to 637,986.60, 956,979.90 and 477,023.40

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Solution

The fourth proportional to 637,986.60, 956,979.90 and 477,023.40 is: 715,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,986.60 : 956,979.90 = 477,023.40 : x
  2. Step 2: Convert to fraction form
    637,986.60/956,979.90 = 477,023.40/x
  3. Step 3: Cross multiply
    637,986.60x = 956,979.90 × 477,023.40
  4. Step 4: Simplify right side
    637,986.60x = 456,501,805,629.66
  5. Step 5: Solve for x
    x = 456,501,805,629.66/637,986.60
  6. Step 6: Final answer
    x = 715,535.10

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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.