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Finding the Fourth Proportional to 72,313.90, 97,312.72 and 72,313.90

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Solution

The fourth proportional to 72,313.90, 97,312.72 and 72,313.90 is: 97,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,313.90 : 97,312.72 = 72,313.90 : x
  2. Step 2: Convert to fraction form
    72,313.90/97,312.72 = 72,313.90/x
  3. Step 3: Cross multiply
    72,313.90x = 97,312.72 × 72,313.90
  4. Step 4: Simplify right side
    72,313.90x = 7,037,062,302.81
  5. Step 5: Solve for x
    x = 7,037,062,302.81/72,313.90
  6. Step 6: Final answer
    x = 97,312.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.