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Finding the Fourth Proportional to 803,779.09, 1,108,710.59 and 476,860.64

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Solution

The fourth proportional to 803,779.09, 1,108,710.59 and 476,860.64 is: 657,768.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,779.09 : 1,108,710.59 = 476,860.64 : x
  2. Step 2: Convert to fraction form
    803,779.09/1,108,710.59 = 476,860.64/x
  3. Step 3: Cross multiply
    803,779.09x = 1,108,710.59 × 476,860.64
  4. Step 4: Simplify right side
    803,779.09x = 528,700,433,594.32
  5. Step 5: Solve for x
    x = 528,700,433,594.32/803,779.09
  6. Step 6: Final answer
    x = 657,768.34

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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.