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Finding the Fourth Proportional to 112,841.60, 155,774.40 and 70,462.40

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Solution

The fourth proportional to 112,841.60, 155,774.40 and 70,462.40 is: 97,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,841.60 : 155,774.40 = 70,462.40 : x
  2. Step 2: Convert to fraction form
    112,841.60/155,774.40 = 70,462.40/x
  3. Step 3: Cross multiply
    112,841.60x = 155,774.40 × 70,462.40
  4. Step 4: Simplify right side
    112,841.60x = 10,976,238,082.56
  5. Step 5: Solve for x
    x = 10,976,238,082.56/112,841.60
  6. Step 6: Final answer
    x = 97,271.20

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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.