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Finding the Fourth Proportional to 112,903.47, 155,813.72 and 62,602.47

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Solution

The fourth proportional to 112,903.47, 155,813.72 and 62,602.47 is: 86,395.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,903.47 : 155,813.72 = 62,602.47 : x
  2. Step 2: Convert to fraction form
    112,903.47/155,813.72 = 62,602.47/x
  3. Step 3: Cross multiply
    112,903.47x = 155,813.72 × 62,602.47
  4. Step 4: Simplify right side
    112,903.47x = 9,754,323,418.88
  5. Step 5: Solve for x
    x = 9,754,323,418.88/112,903.47
  6. Step 6: Final answer
    x = 86,395.25

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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.