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Finding the Fourth Proportional to 656,585.56, 906,088.05 and 354,779.56

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Solution

The fourth proportional to 656,585.56, 906,088.05 and 354,779.56 is: 489,595.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,585.56 : 906,088.05 = 354,779.56 : x
  2. Step 2: Convert to fraction form
    656,585.56/906,088.05 = 354,779.56/x
  3. Step 3: Cross multiply
    656,585.56x = 906,088.05 × 354,779.56
  4. Step 4: Simplify right side
    656,585.56x = 321,461,519,700.26
  5. Step 5: Solve for x
    x = 321,461,519,700.26/656,585.56
  6. Step 6: Final answer
    x = 489,595.78

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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.