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Finding the Fourth Proportional to 526,710.30, 789,547.05 and 260,511.90

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Solution

The fourth proportional to 526,710.30, 789,547.05 and 260,511.90 is: 390,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,710.30 : 789,547.05 = 260,511.90 : x
  2. Step 2: Convert to fraction form
    526,710.30/789,547.05 = 260,511.90/x
  3. Step 3: Cross multiply
    526,710.30x = 789,547.05 × 260,511.90
  4. Step 4: Simplify right side
    526,710.30x = 205,686,402,134.90
  5. Step 5: Solve for x
    x = 205,686,402,134.90/526,710.30
  6. Step 6: Final answer
    x = 390,511.45

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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.