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Finding the Fourth Proportional to 875,785.32, 1,208,547 and 493,847.64

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Solution

The fourth proportional to 875,785.32, 1,208,547 and 493,847.64 is: 681,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,785.32 : 1,208,547 = 493,847.64 : x
  2. Step 2: Convert to fraction form
    875,785.32/1,208,547 = 493,847.64/x
  3. Step 3: Cross multiply
    875,785.32x = 1,208,547 × 493,847.64
  4. Step 4: Simplify right side
    875,785.32x = 596,838,083,779.08
  5. Step 5: Solve for x
    x = 596,838,083,779.08/875,785.32
  6. Step 6: Final answer
    x = 681,489.02

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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.