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Finding the Fourth Proportional to 57,259.52, 79,547.20 and 56,746.88

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Solution

The fourth proportional to 57,259.52, 79,547.20 and 56,746.88 is: 78,835.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,259.52 : 79,547.20 = 56,746.88 : x
  2. Step 2: Convert to fraction form
    57,259.52/79,547.20 = 56,746.88/x
  3. Step 3: Cross multiply
    57,259.52x = 79,547.20 × 56,746.88
  4. Step 4: Simplify right side
    57,259.52x = 4,514,055,412.74
  5. Step 5: Solve for x
    x = 4,514,055,412.74/57,259.52
  6. Step 6: Final answer
    x = 78,835.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.