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Finding the Fourth Proportional to 927,188.40, 1,390,118.40 and 358,082.40

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Solution

The fourth proportional to 927,188.40, 1,390,118.40 and 358,082.40 is: 536,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,188.40 : 1,390,118.40 = 358,082.40 : x
  2. Step 2: Convert to fraction form
    927,188.40/1,390,118.40 = 358,082.40/x
  3. Step 3: Cross multiply
    927,188.40x = 1,390,118.40 × 358,082.40
  4. Step 4: Simplify right side
    927,188.40x = 497,776,932,956.16
  5. Step 5: Solve for x
    x = 497,776,932,956.16/927,188.40
  6. Step 6: Final answer
    x = 536,867.08

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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.