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Finding the Fourth Proportional to 615,005.10, 921,851.55 and 235,779.30

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Solution

The fourth proportional to 615,005.10, 921,851.55 and 235,779.30 is: 353,417.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,005.10 : 921,851.55 = 235,779.30 : x
  2. Step 2: Convert to fraction form
    615,005.10/921,851.55 = 235,779.30/x
  3. Step 3: Cross multiply
    615,005.10x = 921,851.55 × 235,779.30
  4. Step 4: Simplify right side
    615,005.10x = 217,353,513,162.92
  5. Step 5: Solve for x
    x = 217,353,513,162.92/615,005.10
  6. Step 6: Final answer
    x = 353,417.42

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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.