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Finding the Fourth Proportional to 656,078.08, 905,535.12 and 429,592

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Solution

The fourth proportional to 656,078.08, 905,535.12 and 429,592 is: 592,933.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,078.08 : 905,535.12 = 429,592 : x
  2. Step 2: Convert to fraction form
    656,078.08/905,535.12 = 429,592/x
  3. Step 3: Cross multiply
    656,078.08x = 905,535.12 × 429,592
  4. Step 4: Simplify right side
    656,078.08x = 389,010,643,271.04
  5. Step 5: Solve for x
    x = 389,010,643,271.04/656,078.08
  6. Step 6: Final answer
    x = 592,933.46

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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.