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Finding the Fourth Proportional to 76,856.89, 106,044.45 and 46,641.53

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Solution

The fourth proportional to 76,856.89, 106,044.45 and 46,641.53 is: 64,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,856.89 : 106,044.45 = 46,641.53 : x
  2. Step 2: Convert to fraction form
    76,856.89/106,044.45 = 46,641.53/x
  3. Step 3: Cross multiply
    76,856.89x = 106,044.45 × 46,641.53
  4. Step 4: Simplify right side
    76,856.89x = 4,946,075,396.01
  5. Step 5: Solve for x
    x = 4,946,075,396.01/76,856.89
  6. Step 6: Final answer
    x = 64,354.35

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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.