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Finding the Fourth Proportional to 104,603.40, 144,354.16 and 56,856.76

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Solution

The fourth proportional to 104,603.40, 144,354.16 and 56,856.76 is: 78,463.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,603.40 : 144,354.16 = 56,856.76 : x
  2. Step 2: Convert to fraction form
    104,603.40/144,354.16 = 56,856.76/x
  3. Step 3: Cross multiply
    104,603.40x = 144,354.16 × 56,856.76
  4. Step 4: Simplify right side
    104,603.40x = 8,207,509,830.12
  5. Step 5: Solve for x
    x = 8,207,509,830.12/104,603.40
  6. Step 6: Final answer
    x = 78,463.13

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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.