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Finding the Fourth Proportional to 109,038.70, 153,004.10 and 109,038.70

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Solution

The fourth proportional to 109,038.70, 153,004.10 and 109,038.70 is: 153,004.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,038.70 : 153,004.10 = 109,038.70 : x
  2. Step 2: Convert to fraction form
    109,038.70/153,004.10 = 109,038.70/x
  3. Step 3: Cross multiply
    109,038.70x = 153,004.10 × 109,038.70
  4. Step 4: Simplify right side
    109,038.70x = 16,683,368,158.67
  5. Step 5: Solve for x
    x = 16,683,368,158.67/109,038.70
  6. Step 6: Final answer
    x = 153,004.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.