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Finding the Fourth Proportional to 65,307.95, 90,056.53 and 48,347.76

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Solution

The fourth proportional to 65,307.95, 90,056.53 and 48,347.76 is: 66,669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,307.95 : 90,056.53 = 48,347.76 : x
  2. Step 2: Convert to fraction form
    65,307.95/90,056.53 = 48,347.76/x
  3. Step 3: Cross multiply
    65,307.95x = 90,056.53 × 48,347.76
  4. Step 4: Simplify right side
    65,307.95x = 4,354,031,498.87
  5. Step 5: Solve for x
    x = 4,354,031,498.87/65,307.95
  6. Step 6: Final answer
    x = 66,669.24

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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.