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Finding the Fourth Proportional to 86,510.87, 129,785.54 and 26,547.69

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Solution

The fourth proportional to 86,510.87, 129,785.54 and 26,547.69 is: 39,827.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,510.87 : 129,785.54 = 26,547.69 : x
  2. Step 2: Convert to fraction form
    86,510.87/129,785.54 = 26,547.69/x
  3. Step 3: Cross multiply
    86,510.87x = 129,785.54 × 26,547.69
  4. Step 4: Simplify right side
    86,510.87x = 3,445,506,149.66
  5. Step 5: Solve for x
    x = 3,445,506,149.66/86,510.87
  6. Step 6: Final answer
    x = 39,827.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.