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Finding the Fourth Proportional to 52,415.60, 78,623.40 and 48,916.40

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Solution

The fourth proportional to 52,415.60, 78,623.40 and 48,916.40 is: 73,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,415.60 : 78,623.40 = 48,916.40 : x
  2. Step 2: Convert to fraction form
    52,415.60/78,623.40 = 48,916.40/x
  3. Step 3: Cross multiply
    52,415.60x = 78,623.40 × 48,916.40
  4. Step 4: Simplify right side
    52,415.60x = 3,845,973,683.76
  5. Step 5: Solve for x
    x = 3,845,973,683.76/52,415.60
  6. Step 6: Final answer
    x = 73,374.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.