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Finding the Fourth Proportional to 111,031.19, 153,180.02 and 70,737.74

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Solution

The fourth proportional to 111,031.19, 153,180.02 and 70,737.74 is: 97,590.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,031.19 : 153,180.02 = 70,737.74 : x
  2. Step 2: Convert to fraction form
    111,031.19/153,180.02 = 70,737.74/x
  3. Step 3: Cross multiply
    111,031.19x = 153,180.02 × 70,737.74
  4. Step 4: Simplify right side
    111,031.19x = 10,835,608,074.27
  5. Step 5: Solve for x
    x = 10,835,608,074.27/111,031.19
  6. Step 6: Final answer
    x = 97,590.67

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Half scale
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Double scale
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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.