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Finding the Fourth Proportional to 113,053.64, 156,014.64 and 70,636.76

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Solution

The fourth proportional to 113,053.64, 156,014.64 and 70,636.76 is: 97,479.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,053.64 : 156,014.64 = 70,636.76 : x
  2. Step 2: Convert to fraction form
    113,053.64/156,014.64 = 70,636.76/x
  3. Step 3: Cross multiply
    113,053.64x = 156,014.64 × 70,636.76
  4. Step 4: Simplify right side
    113,053.64x = 11,020,368,682.17
  5. Step 5: Solve for x
    x = 11,020,368,682.17/113,053.64
  6. Step 6: Final answer
    x = 97,479.11

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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.