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Finding the Fourth Proportional to 612,602.16, 918,903.48 and 191,910.72

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Solution

The fourth proportional to 612,602.16, 918,903.48 and 191,910.72 is: 287,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,602.16 : 918,903.48 = 191,910.72 : x
  2. Step 2: Convert to fraction form
    612,602.16/918,903.48 = 191,910.72/x
  3. Step 3: Cross multiply
    612,602.16x = 918,903.48 × 191,910.72
  4. Step 4: Simplify right side
    612,602.16x = 176,347,428,457.31
  5. Step 5: Solve for x
    x = 176,347,428,457.31/612,602.16
  6. Step 6: Final answer
    x = 287,866.16

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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.